22246621 has 2 divisors, whose sum is σ = 22246622. Its totient is φ = 22246620.

The previous prime is 22246597. The next prime is 22246667. The reversal of 22246621 is 12664222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19404025 + 2842596 = 4405^2 + 1686^2 .

It is a cyclic number.

It is not a de Polignac number, because 22246621 - 2¹⁷ = 22115549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22246121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11123310 + 11123311.

It is an arithmetic number, because the mean of its divisors is an integer number (11123311).

Almost surely, 2^22246621 is an apocalyptic number.

It is an amenable number.

22246621 is a deficient number, since it is larger than the sum of its proper divisors (1).

22246621 is an equidigital number, since it uses as much as digits as its factorization.

22246621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 25.

The square root of 22246621 is about 4716.6323791451. The cubic root of 22246621 is about 281.2470777639.

The spelling of 22246621 in words is "twenty-two million, two hundred forty-six thousand, six hundred twenty-one".