23133021012 has 60 divisors (see below), whose sum is σ = 61073128116. Its totient is φ = 7634649600.

The previous prime is 23133021001. The next prime is 23133021053. The reversal of 23133021012 is 21012033132.

23133021012 is a `hidden beast` number, since 231 + 330 + 2 + 101 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21037761936 + 2095259076 = 145044^2 + 45774^2 .

It is a super-2 number, since 2×23133021012² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 320733 + ... + 386180.

Almost surely, 2^23133021012 is an apocalyptic number.

It is an amenable number.

23133021012 is an abundant number, since it is smaller than the sum of its proper divisors (37940107104).

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

23133021012 is a wasteful number, since it uses less digits than its factorization.

23133021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707030 (or 707019 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23133021012 its reverse (21012033132), we get a palindrome (44145054144).

The spelling of 23133021012 in words is "twenty-three billion, one hundred thirty-three million, twenty-one thousand, twelve".