221432053312 has 28 divisors (see below), whose sum is σ = 444698268336. Its totient is φ = 109382096000.

The previous prime is 221432053307. The next prime is 221432053331. The reversal of 221432053312 is 213350234122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20837314 + ... + 20847937.

It is an arithmetic number, because the mean of its divisors is an integer number (15882081012).

Almost surely, 2^221432053312 is an apocalyptic number.

It is an amenable number.

221432053312 is an abundant number, since it is smaller than the sum of its proper divisors (223266215024).

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

221432053312 is an equidigital number, since it uses as much as digits as its factorization.

221432053312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41685346 (or 41685336 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 221432053312 its reverse (213350234122), we get a palindrome (434782287434).

The spelling of 221432053312 in words is "two hundred twenty-one billion, four hundred thirty-two million, fifty-three thousand, three hundred twelve".