221332233131 has 2 divisors, whose sum is σ = 221332233132. Its totient is φ = 221332233130.

The previous prime is 221332233053. The next prime is 221332233137. The reversal of 221332233131 is 131332233122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221332233131 - 2³⁰ = 220258491307 is a prime.

It is a super-2 number, since 2×221332233131² (a number of 23 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 221332233131.

It is not a weakly prime, because it can be changed into another prime (221332233137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110666116565 + 110666116566.

It is an arithmetic number, because the mean of its divisors is an integer number (110666116566).

Almost surely, 2^221332233131 is an apocalyptic number.

221332233131 is a deficient number, since it is larger than the sum of its proper divisors (1).

221332233131 is an equidigital number, since it uses as much as digits as its factorization.

221332233131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 26.

Adding to 221332233131 its reverse (131332233122), we get a palindrome (352664466253).

Subtracting from 221332233131 its reverse (131332233122), we obtain a palindrome (90000000009).

The spelling of 221332233131 in words is "two hundred twenty-one billion, three hundred thirty-two million, two hundred thirty-three thousand, one hundred thirty-one".