21010112011210 has 64 divisors (see below), whose sum is σ = 43248321073152. Its totient is φ = 7198881693696.

The previous prime is 21010112011201. The next prime is 21010112011271. The reversal of 21010112011210 is 1211021101012.

It is a happy number.

It is a super-2 number, since 2×21010112011210² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1485541399 + ... + 1485555541.

It is an arithmetic number, because the mean of its divisors is an integer number (675755016768).

Almost surely, 2^{21010112011210} is an apocalyptic number.

21010112011210 is an abundant number, since it is smaller than the sum of its proper divisors (22238209061942).

21010112011210 is a wasteful number, since it uses less digits than its factorization.

21010112011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26167.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21010112011210 its reverse (1211021101012), we get a palindrome (22221133112222).

The spelling of 21010112011210 in words is "twenty-one trillion, ten billion, one hundred twelve million, eleven thousand, two hundred ten".