22022222661 has 24 divisors (see below), whose sum is σ = 32199350976. Its totient is φ = 14502441600.

The previous prime is 22022222657. The next prime is 22022222741. The reversal of 22022222661 is 16622222022.

It is not a de Polignac number, because 22022222661 - 2² = 22022222657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022222561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 342106 + ... + 401348.

It is an arithmetic number, because the mean of its divisors is an integer number (1341639624).

Almost surely, 2^22022222661 is an apocalyptic number.

It is an amenable number.

22022222661 is a deficient number, since it is larger than the sum of its proper divisors (10177128315).

22022222661 is a wasteful number, since it uses less digits than its factorization.

22022222661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59753 (or 59750 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 22022222661 its reverse (16622222022), we get a palindrome (38644444683).

The spelling of 22022222661 in words is "twenty-two billion, twenty-two million, two hundred twenty-two thousand, six hundred sixty-one".