21110211121010 has 64 divisors (see below), whose sum is σ = 41512182251904. Its totient is φ = 7665446553600.

The previous prime is 21110211120991. The next prime is 21110211121019. The reversal of 21110211121010 is 1012111201112.

It is a super-2 number, since 2×21110211121010² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21110211121019) 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, 254565314 + ... + 254648226.

It is an arithmetic number, because the mean of its divisors is an integer number (648627847686).

Almost surely, 2^{21110211121010} is an apocalyptic number.

21110211121010 is a deficient number, since it is larger than the sum of its proper divisors (20401971130894).

21110211121010 is a wasteful number, since it uses less digits than its factorization.

21110211121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86219.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21110211121010 its reverse (1012111201112), we get a palindrome (22122322322122).

The spelling of 21110211121010 in words is "twenty-one trillion, one hundred ten billion, two hundred eleven million, one hundred twenty-one thousand, ten".