21112100010210 has 64 divisors (see below), whose sum is σ = 55286329555584. Its totient is φ = 5117065113600.

The previous prime is 21112100010203. The next prime is 21112100010259. The reversal of 21112100010210 is 1201000121112.

It is a super-2 number, since 2×21112100010210² (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 31 ways as a sum of consecutive naturals, for example, 4713919 + ... + 8027778.

It is an arithmetic number, because the mean of its divisors is an integer number (863848899306).

Almost surely, 2^{21112100010210} is an apocalyptic number.

21112100010210 is an abundant number, since it is smaller than the sum of its proper divisors (34174229545374).

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

21112100010210 is a wasteful number, since it uses less digits than its factorization.

21112100010210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12746739.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21112100010210 its reverse (1201000121112), we get a palindrome (22313100131322).

The spelling of 21112100010210 in words is "twenty-one trillion, one hundred twelve billion, one hundred million, ten thousand, two hundred ten".