221231411313 has 32 divisors (see below), whose sum is σ = 325080749952. Its totient is φ = 132709824000.

The previous prime is 221231411251. The next prime is 221231411381. The reversal of 221231411313 is 313114132122.

It is not a de Polignac number, because 221231411313 - 2⁹ = 221231410801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221231411393) 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, 12766731 + ... + 12784047.

It is an arithmetic number, because the mean of its divisors is an integer number (10158773436).

Almost surely, 2^221231411313 is an apocalyptic number.

It is an amenable number.

221231411313 is a deficient number, since it is larger than the sum of its proper divisors (103849338639).

221231411313 is a wasteful number, since it uses less digits than its factorization.

221231411313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21265.

The product of its digits is 864, while the sum is 24.

Adding to 221231411313 its reverse (313114132122), we get a palindrome (534345543435).

The spelling of 221231411313 in words is "two hundred twenty-one billion, two hundred thirty-one million, four hundred eleven thousand, three hundred thirteen".