12057213 has 16 divisors (see below), whose sum is σ = 18539136. Its totient is φ = 6827520.

The previous prime is 12057203. The next prime is 12057247. The reversal of 12057213 is 31275021.

It is not a de Polignac number, because 12057213 - 2⁹ = 12056701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12057213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12057203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168 + ... + 4913.

It is an arithmetic number, because the mean of its divisors is an integer number (1158696).

Almost surely, 2^12057213 is an apocalyptic number.

It is an amenable number.

12057213 is a deficient number, since it is larger than the sum of its proper divisors (6481923).

12057213 is a wasteful number, since it uses less digits than its factorization.

12057213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5204.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 12057213 is about 3472.3497807681. The cubic root of 12057213 is about 229.3061192149.

It can be divided in two parts, 1205721 and 3, that multiplied together give a palindrome (3617163).

The spelling of 12057213 in words is "twelve million, fifty-seven thousand, two hundred thirteen".