23221132032 has 72 divisors (see below), whose sum is σ = 70630959616. Its totient is φ = 6634607616.

The previous prime is 23221131893. The next prime is 23221132037. The reversal of 23221132032 is 23023112232.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (23221132037) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2154328 + ... + 2165079.

Almost surely, 2^23221132032 is an apocalyptic number.

It is an amenable number.

23221132032 is an abundant number, since it is smaller than the sum of its proper divisors (47409827584).

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

23221132032 is an equidigital number, since it uses as much as digits as its factorization.

23221132032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4319433 (or 4319419 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 23221132032 its reverse (23023112232), we get a palindrome (46244244264).

The spelling of 23221132032 in words is "twenty-three billion, two hundred twenty-one million, one hundred thirty-two thousand, thirty-two".