23222142552521 has 4 divisors (see below), whose sum is σ = 25333246420944. Its totient is φ = 21111038684100.

The previous prime is 23222142552451. The next prime is 23222142552523. The reversal of 23222142552521 is 12525524122232.

It is a happy number.

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 23222142552521 - 2¹⁴ = 23222142536137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23222142552523) 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, 1055551934195 + ... + 1055551934216.

It is an arithmetic number, because the mean of its divisors is an integer number (6333311605236).

Almost surely, 2^{23222142552521} is an apocalyptic number.

It is an amenable number.

23222142552521 is a deficient number, since it is larger than the sum of its proper divisors (2111103868423).

23222142552521 is a wasteful number, since it uses less digits than its factorization.

23222142552521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111103868422.

The product of its digits is 192000, while the sum is 38.

Adding to 23222142552521 its reverse (12525524122232), we get a palindrome (35747666674753).

The spelling of 23222142552521 in words is "twenty-three trillion, two hundred twenty-two billion, one hundred forty-two million, five hundred fifty-two thousand, five hundred twenty-one".