23021512301512 has 24 divisors (see below), whose sum is σ = 44363496836610. Its totient is φ = 11199654627840.

The previous prime is 23021512301509. The next prime is 23021512301527. The reversal of 23021512301512 is 21510321512032.

It can be written as a sum of positive squares in 3 ways, for example, as 18886446989316 + 4135065312196 = 4345854^2 + 2033486^2 .

It is a super-2 number, since 2×23021512301512² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1051007689 + ... + 1051029592.

Almost surely, 2^{23021512301512} is an apocalyptic number.

It is an amenable number.

23021512301512 is a deficient number, since it is larger than the sum of its proper divisors (21341984535098).

23021512301512 is a wasteful number, since it uses less digits than its factorization.

23021512301512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102037361 (or 2102037320 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 23021512301512 its reverse (21510321512032), we get a palindrome (44531833813544).

The spelling of 23021512301512 in words is "twenty-three trillion, twenty-one billion, five hundred twelve million, three hundred one thousand, five hundred twelve".