20102121011210 has 64 divisors (see below), whose sum is σ = 41881345228800. Its totient is φ = 6804107998272.

The previous prime is 20102121011191. The next prime is 20102121011213. The reversal of 20102121011210 is 1211012120102.

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

It is not an unprimeable number, because it can be changed into a prime (20102121011213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47474411 + ... + 47895969.

It is an arithmetic number, because the mean of its divisors is an integer number (654396019200).

Almost surely, 2^{20102121011210} is an apocalyptic number.

20102121011210 is an abundant number, since it is smaller than the sum of its proper divisors (21779224217590).

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

20102121011210 is a wasteful number, since it uses less digits than its factorization.

20102121011210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430275.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20102121011210 its reverse (1211012120102), we get a palindrome (21313133131312).

The spelling of 20102121011210 in words is "twenty trillion, one hundred two billion, one hundred twenty-one million, eleven thousand, two hundred ten".