22205022551 has 4 divisors (see below), whose sum is σ = 22205942400. Its totient is φ = 22204102704.

The previous prime is 22205022533. The next prime is 22205022599. The reversal of 22205022551 is 15522050222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22205022551 - 2¹⁸ = 22204760407 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 22205022551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22205022451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422711 + ... + 472328.

It is an arithmetic number, because the mean of its divisors is an integer number (5551485600).

Almost surely, 2^22205022551 is an apocalyptic number.

22205022551 is a deficient number, since it is larger than the sum of its proper divisors (919849).

22205022551 is an equidigital number, since it uses as much as digits as its factorization.

22205022551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919848.

The product of its (nonzero) digits is 4000, while the sum is 26.

Adding to 22205022551 its reverse (15522050222), we get a palindrome (37727072773).

The spelling of 22205022551 in words is "twenty-two billion, two hundred five million, twenty-two thousand, five hundred fifty-one".