22226978991 has 8 divisors (see below), whose sum is σ = 33869682304. Its totient is φ = 12701130840.

The previous prime is 22226978959. The next prime is 22226979007. The reversal of 22226978991 is 19987962222.

It is a happy number.

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

It is not a de Polignac number, because 22226978991 - 2⁵ = 22226978959 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 (22227978991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529213765 + ... + 529213806.

It is an arithmetic number, because the mean of its divisors is an integer number (4233710288).

Almost surely, 2^22226978991 is an apocalyptic number.

22226978991 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22226978991 is a deficient number, since it is larger than the sum of its proper divisors (11642703313).

22226978991 is a wasteful number, since it uses less digits than its factorization.

22226978991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058427581.

The product of its digits is 3919104, while the sum is 57.

The spelling of 22226978991 in words is "twenty-two billion, two hundred twenty-six million, nine hundred seventy-eight thousand, nine hundred ninety-one".