221315430504 has 32 divisors (see below), whose sum is σ = 632329801920. Its totient is φ = 63232980096.

The previous prime is 221315430493. The next prime is 221315430577. The reversal of 221315430504 is 405034513122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 658676709 + ... + 658677044.

It is an arithmetic number, because the mean of its divisors is an integer number (19760306310).

Almost surely, 2^221315430504 is an apocalyptic number.

221315430504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

221315430504 is an abundant number, since it is smaller than the sum of its proper divisors (411014371416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221315430504 is a wasteful number, since it uses less digits than its factorization.

221315430504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317353769 (or 1317353765 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 221315430504 its reverse (405034513122), we get a palindrome (626349943626).

The spelling of 221315430504 in words is "two hundred twenty-one billion, three hundred fifteen million, four hundred thirty thousand, five hundred four".