23320221320 has 64 divisors (see below), whose sum is σ = 57747219840. Its totient is φ = 8405017600.

The previous prime is 23320221319. The next prime is 23320221373. The reversal of 23320221320 is 2312202332.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 23320221292 and 23320221301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184796 + ... + 284235.

It is an arithmetic number, because the mean of its divisors is an integer number (902300310).

Almost surely, 2^23320221320 is an apocalyptic number.

23320221320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23320221320 is an abundant number, since it is smaller than the sum of its proper divisors (34426998520).

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

23320221320 is a wasteful number, since it uses less digits than its factorization.

23320221320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469166 (or 469162 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 23320221320 its reverse (2312202332), we get a palindrome (25632423652).

The spelling of 23320221320 in words is "twenty-three billion, three hundred twenty million, two hundred twenty-one thousand, three hundred twenty".