210102012131 has 4 divisors (see below), whose sum is σ = 229202195064. Its totient is φ = 191001829200.

The previous prime is 210102012089. The next prime is 210102012143. The reversal of 210102012131 is 131210201012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210102012131 - 2⁶ = 210102012067 is a prime.

It is a super-2 number, since 2×210102012131² (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 (210102012031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9550091450 + ... + 9550091471.

It is an arithmetic number, because the mean of its divisors is an integer number (57300548766).

Almost surely, 2^210102012131 is an apocalyptic number.

210102012131 is a deficient number, since it is larger than the sum of its proper divisors (19100182933).

210102012131 is a wasteful number, since it uses less digits than its factorization.

210102012131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19100182932.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 210102012131 its reverse (131210201012), we get a palindrome (341312213143).

The spelling of 210102012131 in words is "two hundred ten billion, one hundred two million, twelve thousand, one hundred thirty-one".