21211011022210 has 64 divisors (see below), whose sum is σ = 38387215440000. Its totient is φ = 8438438421504.

The previous prime is 21211011022207. The next prime is 21211011022297. The reversal of 21211011022210 is 1222011011212.

It is a super-2 number, since 2×21211011022210² (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, 7217082921 + ... + 7217085859.

It is an arithmetic number, because the mean of its divisors is an integer number (599800241250).

Almost surely, 2^{21211011022210} is an apocalyptic number.

21211011022210 is a deficient number, since it is larger than the sum of its proper divisors (17176204417790).

21211011022210 is a wasteful number, since it uses less digits than its factorization.

21211011022210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6883.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21211011022210 its reverse (1222011011212), we get a palindrome (22433022033422).

The spelling of 21211011022210 in words is "twenty-one trillion, two hundred eleven billion, eleven million, twenty-two thousand, two hundred ten".