12221112202131 has 32 divisors (see below), whose sum is σ = 18701996681728. Its totient is φ = 6953772395520.

The previous prime is 12221112202081. The next prime is 12221112202133. The reversal of 12221112202131 is 13120221112221.

It is not a de Polignac number, because 12221112202131 - 2²⁵ = 12221078647699 is a prime.

It is a super-2 number, since 2×12221112202131² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12221112202098 and 12221112202107.

It is not an unprimeable number, because it can be changed into a prime (12221112202133) by changing a digit.

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, 7462755 + ... + 8951811.

It is an arithmetic number, because the mean of its divisors is an integer number (584437396304).

Almost surely, 2^{12221112202131} is an apocalyptic number.

12221112202131 is a deficient number, since it is larger than the sum of its proper divisors (6480884479597).

12221112202131 is a wasteful number, since it uses less digits than its factorization.

12221112202131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490731.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 12221112202131 its reverse (13120221112221), we get a palindrome (25341333314352).

The spelling of 12221112202131 in words is "twelve trillion, two hundred twenty-one billion, one hundred twelve million, two hundred two thousand, one hundred thirty-one".