21122012120210 has 32 divisors (see below), whose sum is σ = 38891303986752. Its totient is φ = 8256367912000.

The previous prime is 21122012120207. The next prime is 21122012120221. The reversal of 21122012120210 is 1202121022112.

It is a super-2 number, since 2×21122012120210² (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 15 ways as a sum of consecutive naturals, for example, 79255124 + ... + 79521183.

It is an arithmetic number, because the mean of its divisors is an integer number (1215353249586).

Almost surely, 2^{21122012120210} is an apocalyptic number.

21122012120210 is a deficient number, since it is larger than the sum of its proper divisors (17769291866542).

21122012120210 is a wasteful number, since it uses less digits than its factorization.

21122012120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158776618.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21122012120210 its reverse (1202121022112), we get a palindrome (22324133142322).

The spelling of 21122012120210 in words is "twenty-one trillion, one hundred twenty-two billion, twelve million, one hundred twenty thousand, two hundred ten".