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200020021221020 = 225711313671232393
BaseRepresentation
bin101101011110101011001010…
…010100000001011010011100
3222020012201122012002110120212
4231132223022110001122130
5202204112000413033040
61545223532413431552
760062653406014340
oct5536531224013234
9866181565073525
10200020021221020
1158807018517000
121a52527849b5b8
13877ba65186920
143757040a71620
15181cea6aecd65
hexb5eaca50169c

200020021221020 has 384 divisors, whose sum is σ = 577121000343552. Its totient is φ = 56689243269120.

The previous prime is 200020021220911. The next prime is 200020021221049. The reversal of 200020021221020 is 20122120020002.

It is a super-2 number, since 2×2000200212210202 (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 200020021220986 and 200020021221004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 161685944 + ... + 162918336.

It is an arithmetic number, because the mean of its divisors is an integer number (1502919271728).

Almost surely, 2200020021221020 is an apocalyptic number.

200020021221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200020021221020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288560500171776).

200020021221020 is an abundant number, since it is smaller than the sum of its proper divisors (377100979122532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

200020021221020 is a wasteful number, since it uses less digits than its factorization.

200020021221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232522 (or 1232498 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 200020021221020 its reverse (20122120020002), we get a palindrome (220142141241022).

The spelling of 200020021221020 in words is "two hundred trillion, twenty billion, twenty-one million, two hundred twenty-one thousand, twenty".