22776997321 has 8 divisors (see below), whose sum is σ = 24595915904. Its totient is φ = 20967627600.

The previous prime is 22776997301. The next prime is 22776997349. The reversal of 22776997321 is 12379967722.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22776997321 is a prime.

It is the 150921-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22776997301) by changing a digit.

It is a nontrivial repunit in base 150920.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2382255 + ... + 2391796.

It is an arithmetic number, because the mean of its divisors is an integer number (3074489488).

Almost surely, 2^22776997321 is an apocalyptic number.

It is an amenable number.

22776997321 is a deficient number, since it is larger than the sum of its proper divisors (1818918583).

22776997321 is a wasteful number, since it uses less digits than its factorization.

22776997321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4774431.

The product of its digits is 4000752, while the sum is 55.

The spelling of 22776997321 in words is "twenty-two billion, seven hundred seventy-six million, nine hundred ninety-seven thousand, three hundred twenty-one".