201213021131 has 16 divisors (see below), whose sum is σ = 211387700160. Its totient is φ = 191275916160.

The previous prime is 201213021109. The next prime is 201213021169. The reversal of 201213021131 is 131120312102.

It is a cyclic number.

It is not a de Polignac number, because 201213021131 - 2¹⁸ = 201212758987 is a prime.

It is a super-2 number, since 2×201213021131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201213021431) 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, 322061 + ... + 711441.

It is an arithmetic number, because the mean of its divisors is an integer number (13211731260).

Almost surely, 2^201213021131 is an apocalyptic number.

201213021131 is a deficient number, since it is larger than the sum of its proper divisors (10174679029).

201213021131 is a wasteful number, since it uses less digits than its factorization.

201213021131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389686.

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

Adding to 201213021131 its reverse (131120312102), we get a palindrome (332333333233).

The spelling of 201213021131 in words is "two hundred one billion, two hundred thirteen million, twenty-one thousand, one hundred thirty-one".