212113101153231 has 20 divisors (see below), whose sum is σ = 324229156060392. Its totient is φ = 138120158888208.

The previous prime is 212113101153229. The next prime is 212113101153263. The reversal of 212113101153231 is 132351101311212.

212113101153231 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 1 + 310 + 115 + 3 + 231 = 666.

It is not a de Polignac number, because 212113101153231 - 2¹ = 212113101153229 is a prime.

It is a super-2 number, since 2×212113101153231² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 212113101153195 and 212113101153204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212113101153281) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 30449766996 + ... + 30449773961.

Almost surely, 2^{212113101153231} is an apocalyptic number.

212113101153231 is a deficient number, since it is larger than the sum of its proper divisors (112116054907161).

212113101153231 is an equidigital number, since it uses as much as digits as its factorization.

212113101153231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60899541012 (or 60899541003 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

Adding to 212113101153231 its reverse (132351101311212), we get a palindrome (344464202464443).

The spelling of 212113101153231 in words is "two hundred twelve trillion, one hundred thirteen billion, one hundred one million, one hundred fifty-three thousand, two hundred thirty-one".