221222531013 has 16 divisors (see below), whose sum is σ = 322393506816. Its totient is φ = 133817894640.

The previous prime is 221222530981. The next prime is 221222531039. The reversal of 221222531013 is 310135222122.

It is not a de Polignac number, because 221222531013 - 2⁵ = 221222530981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222431013) 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, 6391645 + ... + 6426162.

It is an arithmetic number, because the mean of its divisors is an integer number (20149594176).

Almost surely, 2^221222531013 is an apocalyptic number.

It is an amenable number.

221222531013 is a deficient number, since it is larger than the sum of its proper divisors (101170975803).

221222531013 is a wasteful number, since it uses less digits than its factorization.

221222531013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12818344.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 221222531013 its reverse (310135222122), we get a palindrome (531357753135).

The spelling of 221222531013 in words is "two hundred twenty-one billion, two hundred twenty-two million, five hundred thirty-one thousand, thirteen".