21121120010210 has 128 divisors (see below), whose sum is σ = 44264516083200. Its totient is φ = 7171020083200.

The previous prime is 21121120010153. The next prime is 21121120010231. The reversal of 21121120010210 is 1201002112112.

It is a super-2 number, since 2×21121120010210² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 222020555 + ... + 222115665.

It is an arithmetic number, because the mean of its divisors is an integer number (345816531900).

Almost surely, 2^{21121120010210} is an apocalyptic number.

21121120010210 is an abundant number, since it is smaller than the sum of its proper divisors (23143396072990).

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

21121120010210 is a wasteful number, since it uses less digits than its factorization.

21121120010210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96092.

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

Adding to 21121120010210 its reverse (1201002112112), we get a palindrome (22322122122322).

The spelling of 21121120010210 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred twenty million, ten thousand, two hundred ten".