221013032131 has 16 divisors (see below), whose sum is σ = 241223623200. Its totient is φ = 201693639168.

The previous prime is 221013032117. The next prime is 221013032137. The reversal of 221013032131 is 131230310122.

It is a cyclic number.

It is not a de Polignac number, because 221013032131 - 2¹⁷ = 221012901059 is a prime.

It is a super-2 number, since 2×221013032131² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221013032099 and 221013032108.

It is not an unprimeable number, because it can be changed into a prime (221013032137) 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, 224596 + ... + 701761.

It is an arithmetic number, because the mean of its divisors is an integer number (15076476450).

Almost surely, 2^221013032131 is an apocalyptic number.

221013032131 is a deficient number, since it is larger than the sum of its proper divisors (20210591069).

221013032131 is a wasteful number, since it uses less digits than its factorization.

221013032131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926838.

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

Adding to 221013032131 its reverse (131230310122), we get a palindrome (352243342253).

The spelling of 221013032131 in words is "two hundred twenty-one billion, thirteen million, thirty-two thousand, one hundred thirty-one".