23223133105521 has 4 divisors (see below), whose sum is σ = 30964177474032. Its totient is φ = 15482088737012.

The previous prime is 23223133105511. The next prime is 23223133105553. The reversal of 23223133105521 is 12550133132232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23223133105521 - 2⁵ = 23223133105489 is a prime.

It is a super-2 number, since 2×23223133105521² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23223133105511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3870522184251 + ... + 3870522184256.

It is an arithmetic number, because the mean of its divisors is an integer number (7741044368508).

Almost surely, 2^{23223133105521} is an apocalyptic number.

It is an amenable number.

23223133105521 is a deficient number, since it is larger than the sum of its proper divisors (7741044368511).

23223133105521 is an equidigital number, since it uses as much as digits as its factorization.

23223133105521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7741044368510.

The product of its (nonzero) digits is 32400, while the sum is 33.

Adding to 23223133105521 its reverse (12550133132232), we get a palindrome (35773266237753).

The spelling of 23223133105521 in words is "twenty-three trillion, two hundred twenty-three billion, one hundred thirty-three million, one hundred five thousand, five hundred twenty-one".