23203220111 has 16 divisors (see below), whose sum is σ = 24501734400. Its totient is φ = 21929976288.

The previous prime is 23203220087. The next prime is 23203220123. The reversal of 23203220111 is 11102230232.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23203220111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23203220111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23203220141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 907460 + ... + 932678.

It is an arithmetic number, because the mean of its divisors is an integer number (1531358400).

Almost surely, 2^23203220111 is an apocalyptic number.

23203220111 is a deficient number, since it is larger than the sum of its proper divisors (1298514289).

23203220111 is a wasteful number, since it uses less digits than its factorization.

23203220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25718.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 23203220111 its reverse (11102230232), we get a palindrome (34305450343).

The spelling of 23203220111 in words is "twenty-three billion, two hundred three million, two hundred twenty thousand, one hundred eleven".