221013002131 has 2 divisors, whose sum is σ = 221013002132. Its totient is φ = 221013002130.

The previous prime is 221013002017. The next prime is 221013002143. The reversal of 221013002131 is 131200310122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221013002131 - 2¹⁷ = 221012871059 is a prime.

It is a super-2 number, since 2×221013002131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221013002531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110506501065 + 110506501066.

It is an arithmetic number, because the mean of its divisors is an integer number (110506501066).

Almost surely, 2^221013002131 is an apocalyptic number.

221013002131 is a deficient number, since it is larger than the sum of its proper divisors (1).

221013002131 is an equidigital number, since it uses as much as digits as its factorization.

221013002131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 221013002131 its reverse (131200310122), we get a palindrome (352213312253).

The spelling of 221013002131 in words is "two hundred twenty-one billion, thirteen million, two thousand, one hundred thirty-one".