23221020132 has 36 divisors (see below), whose sum is σ = 60062642640. Its totient is φ = 7560331632.

The previous prime is 23221020131. The next prime is 23221020139. The reversal of 23221020132 is 23102012232.

It is a tau number, because it is divible by the number of its divisors (36).

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 (23221020131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7498782 + ... + 7501877.

It is an arithmetic number, because the mean of its divisors is an integer number (1668406740).

Almost surely, 2^23221020132 is an apocalyptic number.

It is an amenable number.

23221020132 is an abundant number, since it is smaller than the sum of its proper divisors (36841622508).

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

23221020132 is a wasteful number, since it uses less digits than its factorization.

23221020132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15000712 (or 15000707 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 23221020132 its reverse (23102012232), we get a palindrome (46323032364).

The spelling of 23221020132 in words is "twenty-three billion, two hundred twenty-one million, twenty thousand, one hundred thirty-two".