221423319320 has 128 divisors (see below), whose sum is σ = 613295677440. Its totient is φ = 70273336320.

The previous prime is 221423319319. The next prime is 221423319353. The reversal of 221423319320 is 23913324122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 354917 + ... + 754196.

It is an arithmetic number, because the mean of its divisors is an integer number (4791372480).

Almost surely, 2^221423319320 is an apocalyptic number.

221423319320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221423319320 is an abundant number, since it is smaller than the sum of its proper divisors (391872358120).

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

221423319320 is a wasteful number, since it uses less digits than its factorization.

221423319320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109185 (or 1109181 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 221423319320 in words is "two hundred twenty-one billion, four hundred twenty-three million, three hundred nineteen thousand, three hundred twenty".