23221320300 has 144 divisors (see below), whose sum is σ = 75918057600. Its totient is φ = 6087355200.

The previous prime is 23221320299. The next prime is 23221320301. The reversal of 23221320300 is 302312232.

It is a happy number.

23221320300 is a `hidden beast` number, since 23 + 2 + 21 + 320 + 300 = 666.

It is an interprime number because it is at equal distance from previous prime (23221320299) and next prime (23221320301).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (23221320301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86415 + ... + 232185.

Almost surely, 2^23221320300 is an apocalyptic number.

23221320300 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 23221320300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37959028800).

23221320300 is an abundant number, since it is smaller than the sum of its proper divisors (52696737300).

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

23221320300 is a wasteful number, since it uses less digits than its factorization.

23221320300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145853 (or 145840 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 23221320300 its reverse (302312232), we get a palindrome (23523632532).

The spelling of 23221320300 in words is "twenty-three billion, two hundred twenty-one million, three hundred twenty thousand, three hundred".