221323022013 has 16 divisors (see below), whose sum is σ = 306485467136. Its totient is φ = 141913030320.

The previous prime is 221323022009. The next prime is 221323022051. The reversal of 221323022013 is 310220323122.

It is a happy number.

It is not a de Polignac number, because 221323022013 - 2² = 221323022009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221323222013) 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, 7284895 + ... + 7315212.

It is an arithmetic number, because the mean of its divisors is an integer number (19155341696).

Almost surely, 2^221323022013 is an apocalyptic number.

It is an amenable number.

221323022013 is a deficient number, since it is larger than the sum of its proper divisors (85162445123).

221323022013 is a wasteful number, since it uses less digits than its factorization.

221323022013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14600304.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 221323022013 its reverse (310220323122), we get a palindrome (531543345135).

The spelling of 221323022013 in words is "two hundred twenty-one billion, three hundred twenty-three million, twenty-two thousand, thirteen".