23201111015 has 16 divisors (see below), whose sum is σ = 28121154048. Its totient is φ = 18374464416.

The previous prime is 23201111009. The next prime is 23201111027. The reversal of 23201111015 is 51011110232.

It is a cyclic number.

It is not a de Polignac number, because 23201111015 - 2⁸ = 23201110759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23201110984 and 23201111002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2057984 + ... + 2069226.

It is an arithmetic number, because the mean of its divisors is an integer number (1757572128).

Almost surely, 2^23201111015 is an apocalyptic number.

23201111015 is a deficient number, since it is larger than the sum of its proper divisors (4920043033).

23201111015 is a wasteful number, since it uses less digits than its factorization.

23201111015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15358.

The product of its (nonzero) digits is 60, while the sum is 17.

Adding to 23201111015 its reverse (51011110232), we get a palindrome (74212221247).

The spelling of 23201111015 in words is "twenty-three billion, two hundred one million, one hundred eleven thousand, fifteen".