22243436021 has 16 divisors (see below), whose sum is σ = 24819903360. Its totient is φ = 19810391040.

The previous prime is 22243435979. The next prime is 22243436027. The reversal of 22243436021 is 12063434222.

It is a happy number.

It is not a de Polignac number, because 22243436021 - 2²⁶ = 22176327157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22243436027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245480 + ... + 323646.

It is an arithmetic number, because the mean of its divisors is an integer number (1551243960).

Almost surely, 2^22243436021 is an apocalyptic number.

It is an amenable number.

22243436021 is a deficient number, since it is larger than the sum of its proper divisors (2576467339).

22243436021 is a wasteful number, since it uses less digits than its factorization.

22243436021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79084.

The product of its (nonzero) digits is 13824, while the sum is 29.

The spelling of 22243436021 in words is "twenty-two billion, two hundred forty-three million, four hundred thirty-six thousand, twenty-one".