212013211131 has 10 divisors (see below), whose sum is σ = 316711093292. Its totient is φ = 141342140700.

The previous prime is 212013211117. The next prime is 212013211141. The reversal of 212013211131 is 131112310212.

212013211131 is a `hidden beast` number, since 212 + 0 + 1 + 321 + 1 + 131 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-212013211131 is a prime.

It is a super-2 number, since 2×212013211131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212013211141) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1308723445 + ... + 1308723606.

Almost surely, 2^212013211131 is an apocalyptic number.

212013211131 is a deficient number, since it is larger than the sum of its proper divisors (104697882161).

212013211131 is an equidigital number, since it uses as much as digits as its factorization.

212013211131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2617447063 (or 2617447054 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 212013211131 its reverse (131112310212), we get a palindrome (343125521343).

The spelling of 212013211131 in words is "two hundred twelve billion, thirteen million, two hundred eleven thousand, one hundred thirty-one".