21822197222 has 16 divisors (see below), whose sum is σ = 37414535712. Its totient is φ = 9351106560.

The previous prime is 21822197219. The next prime is 21822197227. The reversal of 21822197222 is 22279122812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21822197227) 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 7 ways as a sum of consecutive naturals, for example, 6068 + ... + 209000.

It is an arithmetic number, because the mean of its divisors is an integer number (2338408482).

Almost surely, 2^21822197222 is an apocalyptic number.

21822197222 is a deficient number, since it is larger than the sum of its proper divisors (15592338490).

21822197222 is a wasteful number, since it uses less digits than its factorization.

21822197222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210623.

The product of its digits is 32256, while the sum is 38.

The spelling of 21822197222 in words is "twenty-one billion, eight hundred twenty-two million, one hundred ninety-seven thousand, two hundred twenty-two".