221231203013 has 32 divisors (see below), whose sum is σ = 242108611200. Its totient is φ = 201475296000.

The previous prime is 221231203007. The next prime is 221231203049. The reversal of 221231203013 is 310302132122.

It is a cyclic number.

It is not a de Polignac number, because 221231203013 - 2⁶ = 221231202949 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 (221231206013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11820563 + ... + 11839263.

It is an arithmetic number, because the mean of its divisors is an integer number (7565894100).

Almost surely, 2^221231203013 is an apocalyptic number.

It is an amenable number.

221231203013 is a deficient number, since it is larger than the sum of its proper divisors (20877408187).

221231203013 is a wasteful number, since it uses less digits than its factorization.

221231203013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19013.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 221231203013 its reverse (310302132122), we get a palindrome (531533335135).

The spelling of 221231203013 in words is "two hundred twenty-one billion, two hundred thirty-one million, two hundred three thousand, thirteen".