22021770989 has 8 divisors (see below), whose sum is σ = 22536131040. Its totient is φ = 21511072336.

The previous prime is 22021770961. The next prime is 22021771007. The reversal of 22021770989 is 98907712022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22021770989 - 2²⁰ = 22020722413 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 (22021770929) 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, 903179 + ... + 927240.

It is an arithmetic number, because the mean of its divisors is an integer number (2817016380).

Almost surely, 2^22021770989 is an apocalyptic number.

It is an amenable number.

22021770989 is a deficient number, since it is larger than the sum of its proper divisors (514360051).

22021770989 is a wasteful number, since it uses less digits than its factorization.

22021770989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830699.

The product of its (nonzero) digits is 254016, while the sum is 47.

The spelling of 22021770989 in words is "twenty-two billion, twenty-one million, seven hundred seventy thousand, nine hundred eighty-nine".