3221151213 has 16 divisors (see below), whose sum is σ = 4909874816. Its totient is φ = 1840112640.

The previous prime is 3221151209. The next prime is 3221151221. The reversal of 3221151213 is 3121511223.

It is not a de Polignac number, because 3221151213 - 2² = 3221151209 is a prime.

It is a super-2 number, since 2×3221151213² = 20751630274022742738, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 3221151213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221151203) 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, 56253 + ... + 98013.

It is an arithmetic number, because the mean of its divisors is an integer number (306867176).

Almost surely, 2^3221151213 is an apocalyptic number.

It is an amenable number.

3221151213 is a deficient number, since it is larger than the sum of its proper divisors (1688723603).

3221151213 is a wasteful number, since it uses less digits than its factorization.

3221151213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45444.

The product of its digits is 360, while the sum is 21.

The square root of 3221151213 is about 56755.1866616612. The cubic root of 3221151213 is about 1476.8522111821.

Adding to 3221151213 its reverse (3121511223), we get a palindrome (6342662436).

The spelling of 3221151213 in words is "three billion, two hundred twenty-one million, one hundred fifty-one thousand, two hundred thirteen".