22283621 has 2 divisors, whose sum is σ = 22283622. Its totient is φ = 22283620.

The previous prime is 22283579. The next prime is 22283641. The reversal of 22283621 is 12638222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21808900 + 474721 = 4670^2 + 689^2 .

It is a cyclic number.

It is not a de Polignac number, because 22283621 - 2⁶ = 22283557 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22283641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11141810 + 11141811.

It is an arithmetic number, because the mean of its divisors is an integer number (11141811).

Almost surely, 2^22283621 is an apocalyptic number.

It is an amenable number.

22283621 is a deficient number, since it is larger than the sum of its proper divisors (1).

22283621 is an equidigital number, since it uses as much as digits as its factorization.

22283621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 26.

The square root of 22283621 is about 4720.5530396342. The cubic root of 22283621 is about 281.4029123380.

The spelling of 22283621 in words is "twenty-two million, two hundred eighty-three thousand, six hundred twenty-one".