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20002222222220 = 225727313712591621
BaseRepresentation
bin1001000110001001000010…
…10110011010101110001100
32121211012020020222002110102
410203010201112122232030
510110204022342102340
6110312521040030232
74133053466423600
oct443044126325614
977735206862412
1020002222222220
116411992a95527
1222b0693902378
13b212807c6124
144d2181441500
1524a484ee2215
hex12312159ab8c

20002222222220 has 288 divisors, whose sum is σ = 49963901924160. Its totient is φ = 6705116651520.

The previous prime is 20002222222207. The next prime is 20002222222253. The reversal of 20002222222220 is 2222222220002.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20002222222192 and 20002222222201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12339433010 + ... + 12339434630.

It is an arithmetic number, because the mean of its divisors is an integer number (173485770570).

Almost surely, 220002222222220 is an apocalyptic number.

20002222222220 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 20002222222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24981950962080).

20002222222220 is an abundant number, since it is smaller than the sum of its proper divisors (29961679701940).

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

20002222222220 is a wasteful number, since it uses less digits than its factorization.

20002222222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3113 (or 3104 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20002222222220 its reverse (2222222220002), we get a palindrome (22224444442222).

It can be divided in two parts, 20002 and 222222220, that added together give a palindrome (222242222).

The spelling of 20002222222220 in words is "twenty trillion, two billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty".