12212120111210 has 16 divisors (see below), whose sum is σ = 22121827771176. Its totient is φ = 4853734362048.

The previous prime is 12212120111173. The next prime is 12212120111227. The reversal of 12212120111210 is 1211102121221.

It can be written as a sum of positive squares in 4 ways, for example, as 9055411026841 + 3156709084369 = 3009221^2 + 1776713^2 .

It is a super-2 number, since 2×12212120111210² (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 7 ways as a sum of consecutive naturals, for example, 3889208657 + ... + 3889211796.

Almost surely, 2^{12212120111210} is an apocalyptic number.

12212120111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12212120111210 is a deficient number, since it is larger than the sum of its proper divisors (9909707659966).

12212120111210 is a wasteful number, since it uses less digits than its factorization.

12212120111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7778420617.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12212120111210 its reverse (1211102121221), we get a palindrome (13423222232431).

The spelling of 12212120111210 in words is "twelve trillion, two hundred twelve billion, one hundred twenty million, one hundred eleven thousand, two hundred ten".