100220201200020 has 288 divisors, whose sum is σ = 332599372237440. Its totient is φ = 22455686246400.

The previous prime is 100220201199983. The next prime is 100220201200181. The reversal of 100220201200020 is 20002102022001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 100220201199969 and 100220201200005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3204817 + ... + 14515896.

It is an arithmetic number, because the mean of its divisors is an integer number (1154858931380).

Almost surely, 2^{100220201200020} is an apocalyptic number.

100220201200020 is a gapful number since it is divisible by the number (10) 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 100220201200020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166299686118720).

100220201200020 is an abundant number, since it is smaller than the sum of its proper divisors (232379171037420).

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

100220201200020 is a wasteful number, since it uses less digits than its factorization.

100220201200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17720807 (or 17720794 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 100220201200020 its reverse (20002102022001), we get a palindrome (120222303222021).

The spelling of 100220201200020 in words is "one hundred trillion, two hundred twenty billion, two hundred one million, two hundred thousand, twenty".