23265212121 has 20 divisors (see below), whose sum is σ = 34768912464. Its totient is φ = 15503578200.

The previous prime is 23265212107. The next prime is 23265212143. The reversal of 23265212121 is 12121256232.

23265212121 is a `hidden beast` number, since 2 + 3 + 2 + 652 + 1 + 2 + 1 + 2 + 1 = 666.

It is not a de Polignac number, because 23265212121 - 2²² = 23261017817 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (23265212101) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 135726 + ... + 254856.

Almost surely, 2^23265212121 is an apocalyptic number.

It is an amenable number.

23265212121 is a deficient number, since it is larger than the sum of its proper divisors (11503700343).

23265212121 is a wasteful number, since it uses less digits than its factorization.

23265212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121554 (or 121545 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

Adding to 23265212121 its reverse (12121256232), we get a palindrome (35386468353).

The spelling of 23265212121 in words is "twenty-three billion, two hundred sixty-five million, two hundred twelve thousand, one hundred twenty-one".