201021332131 has 16 divisors (see below), whose sum is σ = 219978270720. Its totient is φ = 182871642240.

The previous prime is 201021332129. The next prime is 201021332201. The reversal of 201021332131 is 131233120102.

It is a cyclic number.

It is not a de Polignac number, because 201021332131 - 2¹ = 201021332129 is a prime.

It is a super-2 number, since 2×201021332131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201021332099 and 201021332108.

It is not an unprimeable number, because it can be changed into a prime (201021332431) 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, 205210 + ... + 666448.

It is an arithmetic number, because the mean of its divisors is an integer number (13748641920).

Almost surely, 2^201021332131 is an apocalyptic number.

201021332131 is a deficient number, since it is larger than the sum of its proper divisors (18956938589).

201021332131 is a wasteful number, since it uses less digits than its factorization.

201021332131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462114.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 201021332131 its reverse (131233120102), we get a palindrome (332254452233).

The spelling of 201021332131 in words is "two hundred one billion, twenty-one million, three hundred thirty-two thousand, one hundred thirty-one".