22276386221 has 4 divisors (see below), whose sum is σ = 23044537500. Its totient is φ = 21508234944.

The previous prime is 22276386211. The next prime is 22276386269. The reversal of 22276386221 is 12268367222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15329163721 + 6947222500 = 123811^2 + 83350^2 .

It is a cyclic number.

It is not a de Polignac number, because 22276386221 - 2⁶ = 22276386157 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 (22276386211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384075596 + ... + 384075653.

It is an arithmetic number, because the mean of its divisors is an integer number (5761134375).

Almost surely, 2^22276386221 is an apocalyptic number.

It is an amenable number.

22276386221 is a deficient number, since it is larger than the sum of its proper divisors (768151279).

22276386221 is an equidigital number, since it uses as much as digits as its factorization.

22276386221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768151278.

The product of its digits is 193536, while the sum is 41.

The spelling of 22276386221 in words is "twenty-two billion, two hundred seventy-six million, three hundred eighty-six thousand, two hundred twenty-one".