213120102131 has 12 divisors (see below), whose sum is σ = 230471465280. Its totient is φ = 196824547920.

The previous prime is 213120102061. The next prime is 213120102197. The reversal of 213120102131 is 131201021312.

It is a de Polignac number, because none of the positive numbers 2^k-213120102131 is a prime.

It is a super-2 number, since 2×213120102131² (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 (213120102731) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6930755 + ... + 6961436.

It is an arithmetic number, because the mean of its divisors is an integer number (19205955440).

Almost surely, 2^213120102131 is an apocalyptic number.

213120102131 is a deficient number, since it is larger than the sum of its proper divisors (17351363149).

213120102131 is a wasteful number, since it uses less digits than its factorization.

213120102131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13892266 (or 13892243 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 213120102131 its reverse (131201021312), we get a palindrome (344321123443).

It can be divided in two parts, 2 and 13120102131, that multiplied together give a palindrome (26240204262).

The spelling of 213120102131 in words is "two hundred thirteen billion, one hundred twenty million, one hundred two thousand, one hundred thirty-one".