23221320000 has 280 divisors, whose sum is σ = 81298426176. Its totient is φ = 5827584000.

The previous prime is 23221319999. The next prime is 23221320049. The reversal of 23221320000 is 2312232.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2034309 + ... + 2045691.

Almost surely, 2^23221320000 is an apocalyptic number.

23221320000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23221320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40649213088).

23221320000 is an abundant number, since it is smaller than the sum of its proper divisors (58077106176).

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

23221320000 is a wasteful number, since it uses less digits than its factorization.

23221320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11435 (or 11410 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 23221320000 its reverse (2312232), we get a palindrome (23223632232).

The spelling of 23221320000 in words is "twenty-three billion, two hundred twenty-one million, three hundred twenty thousand".