212012131 has 8 divisors (see below), whose sum is σ = 219055104. Its totient is φ = 204981960.

The previous prime is 212012123. The next prime is 212012197. The reversal of 212012131 is 131210212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212012131 - 2³ = 212012123 is a prime.

It is a super-2 number, since 2×212012131² = 89898287382322322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212019131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39876 + ... + 44878.

It is an arithmetic number, because the mean of its divisors is an integer number (27381888).

Almost surely, 2^212012131 is an apocalyptic number.

212012131 is a deficient number, since it is larger than the sum of its proper divisors (7042973).

212012131 is a wasteful number, since it uses less digits than its factorization.

212012131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6401.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 212012131 is about 14560.6363528522. The cubic root of 212012131 is about 596.2845688124.

Adding to 212012131 its reverse (131210212), we get a palindrome (343222343).

It can be divided in two parts, 21201 and 2131, that added together give a palindrome (23332).

The spelling of 212012131 in words is "two hundred twelve million, twelve thousand, one hundred thirty-one".