23021120 has 28 divisors (see below), whose sum is σ = 54819804. Its totient is φ = 9208320.

The previous prime is 23021101. The next prime is 23021147. The reversal of 23021120 is 2112032.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5914624 + 17106496 = 2432^2 + 4136^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35651 + ... + 36290.

Almost surely, 2^23021120 is an apocalyptic number.

23021120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23021120 is an abundant number, since it is smaller than the sum of its proper divisors (31798684).

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

23021120 is an equidigital number, since it uses as much as digits as its factorization.

23021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71958 (or 71948 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 23021120 is about 4798.0329302747. The cubic root of 23021120 is about 284.4737184136.

Adding to 23021120 its reverse (2112032), we get a palindrome (25133152).

The spelling of 23021120 in words is "twenty-three million, twenty-one thousand, one hundred twenty".