23200021020 has 48 divisors (see below), whose sum is σ = 70865520768. Its totient is φ = 5624247360.

The previous prime is 23200021001. The next prime is 23200021021. The reversal of 23200021020 is 2012000232.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 23200020987 and 23200021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23200021021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17575114 + ... + 17576433.

It is an arithmetic number, because the mean of its divisors is an integer number (1476365016).

Almost surely, 2^23200021020 is an apocalyptic number.

23200021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23200021020 is an abundant number, since it is smaller than the sum of its proper divisors (47665499748).

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

23200021020 is a wasteful number, since it uses less digits than its factorization.

23200021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35151570 (or 35151568 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 23200021020 its reverse (2012000232), we get a palindrome (25212021252).

The spelling of 23200021020 in words is "twenty-three billion, two hundred million, twenty-one thousand, twenty".