211012131 has 16 divisors (see below), whose sum is σ = 307301760. Its totient is φ = 127729920.

The previous prime is 211012127. The next prime is 211012183. The reversal of 211012131 is 131210112.

It is not a de Polignac number, because 211012131 - 2² = 211012127 is a prime.

It is a super-2 number, since 2×211012131² = 89052238858322322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211012531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27216 + ... + 34098.

It is an arithmetic number, because the mean of its divisors is an integer number (19206360).

Almost surely, 2^211012131 is an apocalyptic number.

211012131 is a deficient number, since it is larger than the sum of its proper divisors (96289629).

211012131 is a wasteful number, since it uses less digits than its factorization.

211012131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7826.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 211012131 is about 14526.2566065728. The cubic root of 211012131 is about 595.3455902563.

Adding to 211012131 its reverse (131210112), we get a palindrome (342222243).

It can be divided in two parts, 21101 and 2131, that added together give a palindrome (23232).

The spelling of 211012131 in words is "two hundred eleven million, twelve thousand, one hundred thirty-one".