20100120010220 has 24 divisors (see below), whose sum is σ = 42431248113408. Its totient is φ = 7997953510400.

The previous prime is 20100120010189. The next prime is 20100120010247. The reversal of 20100120010220 is 2201002100102.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2630901941 + ... + 2630909580.

It is an arithmetic number, because the mean of its divisors is an integer number (1767968671392).

Almost surely, 2^{20100120010220} is an apocalyptic number.

20100120010220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100120010220 is an abundant number, since it is smaller than the sum of its proper divisors (22331128103188).

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

20100120010220 is a wasteful number, since it uses less digits than its factorization.

20100120010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5261811721 (or 5261811719 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20100120010220 its reverse (2201002100102), we get a palindrome (22301122110322).

The spelling of 20100120010220 in words is "twenty trillion, one hundred billion, one hundred twenty million, ten thousand, two hundred twenty".