22276621 has 4 divisors (see below), whose sum is σ = 22286272. Its totient is φ = 22266972.

The previous prime is 22276609. The next prime is 22276633. The reversal of 22276621 is 12667222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (22276609) and next prime (22276633).

It is a cyclic number.

It is not a de Polignac number, because 22276621 - 2¹⁷ = 22145549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22276621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22276601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 910 + ... + 6736.

It is an arithmetic number, because the mean of its divisors is an integer number (5571568).

Almost surely, 2^22276621 is an apocalyptic number.

It is an amenable number.

22276621 is a deficient number, since it is larger than the sum of its proper divisors (9651).

22276621 is an equidigital number, since it uses as much as digits as its factorization.

22276621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9650.

The product of its digits is 4032, while the sum is 28.

The square root of 22276621 is about 4719.8115428479. The cubic root of 22276621 is about 281.3734433589.

The spelling of 22276621 in words is "twenty-two million, two hundred seventy-six thousand, six hundred twenty-one".