21130201131 has 32 divisors (see below), whose sum is σ = 33326307840. Its totient is φ = 11783211264.

The previous prime is 21130201117. The next prime is 21130201163. The reversal of 21130201131 is 13110203112.

It is a happy number.

It is not a de Polignac number, because 21130201131 - 2¹³ = 21130192939 is a prime.

It is a super-2 number, since 2×21130201131² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21130201131.

It is not an unprimeable number, because it can be changed into a prime (21130201111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 602866 + ... + 636951.

It is an arithmetic number, because the mean of its divisors is an integer number (1041447120).

Almost surely, 2^21130201131 is an apocalyptic number.

21130201131 is a deficient number, since it is larger than the sum of its proper divisors (12196106709).

21130201131 is a wasteful number, since it uses less digits than its factorization.

21130201131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239875.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21130201131 its reverse (13110203112), we get a palindrome (34240404243).

The spelling of 21130201131 in words is "twenty-one billion, one hundred thirty million, two hundred one thousand, one hundred thirty-one".