21845822022 has 48 divisors (see below), whose sum is σ = 47500240320. Its totient is φ = 7256198400.

The previous prime is 21845822017. The next prime is 21845822023. The reversal of 21845822022 is 22022854812.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21845822023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10557604 + ... + 10559672.

It is an arithmetic number, because the mean of its divisors is an integer number (989588340).

Almost surely, 2^21845822022 is an apocalyptic number.

21845822022 is an abundant number, since it is smaller than the sum of its proper divisors (25654418298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21845822022 is a wasteful number, since it uses less digits than its factorization.

21845822022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3869 (or 3866 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 36.

The spelling of 21845822022 in words is "twenty-one billion, eight hundred forty-five million, eight hundred twenty-two thousand, twenty-two".