22222621485409 has 2 divisors, whose sum is σ = 22222621485410. Its totient is φ = 22222621485408.

The previous prime is 22222621485397. The next prime is 22222621485457. The reversal of 22222621485409 is 90458412622222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22198260519009 + 24360966400 = 4711503^2 + 156080^2 .

It is a cyclic number.

It is not a de Polignac number, because 22222621485409 - 2⁵ = 22222621485377 is a prime.

It is not a weakly prime, because it can be changed into another prime (22222621435409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111310742704 + 11111310742705.

It is an arithmetic number, because the mean of its divisors is an integer number (11111310742705).

Almost surely, 2^{22222621485409} is an apocalyptic number.

It is an amenable number.

22222621485409 is a deficient number, since it is larger than the sum of its proper divisors (1).

22222621485409 is an equidigital number, since it uses as much as digits as its factorization.

22222621485409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2211840, while the sum is 49.

The spelling of 22222621485409 in words is "twenty-two trillion, two hundred twenty-two billion, six hundred twenty-one million, four hundred eighty-five thousand, four hundred nine".