22514522221 has 4 divisors (see below), whose sum is σ = 22518381312. Its totient is φ = 22510663132.

The previous prime is 22514522197. The next prime is 22514522227. The reversal of 22514522221 is 12222541522.

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 22514522221 - 2⁹ = 22514521709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22514522221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22514522227) 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, 1920781 + ... + 1932466.

It is an arithmetic number, because the mean of its divisors is an integer number (5629595328).

Almost surely, 2^22514522221 is an apocalyptic number.

It is an amenable number.

22514522221 is a deficient number, since it is larger than the sum of its proper divisors (3859091).

22514522221 is an equidigital number, since it uses as much as digits as its factorization.

22514522221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3859090.

The product of its digits is 6400, while the sum is 28.

The spelling of 22514522221 in words is "twenty-two billion, five hundred fourteen million, five hundred twenty-two thousand, two hundred twenty-one".