213120313211 has 16 divisors (see below), whose sum is σ = 234579330720. Its totient is φ = 192431827200.

The previous prime is 213120313177. The next prime is 213120313213. The reversal of 213120313211 is 112313021312.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213120313211 is a prime.

It is a super-2 number, since 2×213120313211² (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 (213120313213) 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, 868826 + ... + 1086783.

It is an arithmetic number, because the mean of its divisors is an integer number (14661208170).

Almost surely, 2^213120313211 is an apocalyptic number.

213120313211 is a deficient number, since it is larger than the sum of its proper divisors (21459017509).

213120313211 is a wasteful number, since it uses less digits than its factorization.

213120313211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955806.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 213120313211 its reverse (112313021312), we get a palindrome (325433334523).

The spelling of 213120313211 in words is "two hundred thirteen billion, one hundred twenty million, three hundred thirteen thousand, two hundred eleven".