213112222223131 has 32 divisors (see below), whose sum is σ = 275727435540480. Its totient is φ = 159829424361600.

The previous prime is 213112222223071. The next prime is 213112222223161. The reversal of 213112222223131 is 131322222211312.

It is not a de Polignac number, because 213112222223131 - 2⁹ = 213112222222619 is a prime.

It is a super-2 number, since 2×213112222223131² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213112222223131.

It is not an unprimeable number, because it can be changed into a prime (213112222223161) 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, 149824675 + ... + 151240396.

It is an arithmetic number, because the mean of its divisors is an integer number (8616482360640).

Almost surely, 2^{213112222223131} is an apocalyptic number.

213112222223131 is a deficient number, since it is larger than the sum of its proper divisors (62615213317349).

213112222223131 is a wasteful number, since it uses less digits than its factorization.

213112222223131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301065435.

The product of its digits is 3456, while the sum is 28.

Adding to 213112222223131 its reverse (131322222211312), we get a palindrome (344434444434443).

The spelling of 213112222223131 in words is "two hundred thirteen trillion, one hundred twelve billion, two hundred twenty-two million, two hundred twenty-three thousand, one hundred thirty-one".