221312231104 has 14 divisors (see below), whose sum is σ = 439166458724. Its totient is φ = 110656115520.

The previous prime is 221312231093. The next prime is 221312231117. The reversal of 221312231104 is 401132213122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1729001742 + ... + 1729001869.

It is an arithmetic number, because the mean of its divisors is an integer number (31369032766).

Almost surely, 2^221312231104 is an apocalyptic number.

It is an amenable number.

221312231104 is a deficient number, since it is larger than the sum of its proper divisors (217854227620).

221312231104 is an equidigital number, since it uses as much as digits as its factorization.

221312231104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3458003623 (or 3458003613 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 221312231104 its reverse (401132213122), we get a palindrome (622444444226).

The spelling of 221312231104 in words is "two hundred twenty-one billion, three hundred twelve million, two hundred thirty-one thousand, one hundred four".