23220442511 has 16 divisors (see below), whose sum is σ = 29320372224. Its totient is φ = 17918001024.

The previous prime is 23220442493. The next prime is 23220442519. The reversal of 23220442511 is 11524402232.

It is not a de Polignac number, because 23220442511 - 2³⁴ = 6040573327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23220442519) 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, 4239215 + ... + 4244688.

It is an arithmetic number, because the mean of its divisors is an integer number (1832523264).

Almost surely, 2^23220442511 is an apocalyptic number.

23220442511 is a deficient number, since it is larger than the sum of its proper divisors (6099929713).

23220442511 is a wasteful number, since it uses less digits than its factorization.

23220442511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8483950.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 23220442511 its reverse (11524402232), we get a palindrome (34744844743).

The spelling of 23220442511 in words is "twenty-three billion, two hundred twenty million, four hundred forty-two thousand, five hundred eleven".