213110021331 has 16 divisors (see below), whose sum is σ = 322435968000. Its totient is φ = 139050509544.

The previous prime is 213110021303. The next prime is 213110021339. The reversal of 213110021331 is 133120011312.

213110021331 is a `hidden beast` number, since 2 + 1 + 311 + 0 + 0 + 21 + 331 = 666.

It is not a de Polignac number, because 213110021331 - 2¹⁵ = 213109988563 is a prime.

It is a super-2 number, since 2×213110021331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213110021339) 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, 83966431 + ... + 83968968.

It is an arithmetic number, because the mean of its divisors is an integer number (20152248000).

Almost surely, 2^213110021331 is an apocalyptic number.

213110021331 is a deficient number, since it is larger than the sum of its proper divisors (109325946669).

213110021331 is a wasteful number, since it uses less digits than its factorization.

213110021331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167935455 (or 167935449 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 213110021331 its reverse (133120011312), we get a palindrome (346230032643).

The spelling of 213110021331 in words is "two hundred thirteen billion, one hundred ten million, twenty-one thousand, three hundred thirty-one".