22098472621 has 2 divisors, whose sum is σ = 22098472622. Its totient is φ = 22098472620.

The previous prime is 22098472609. The next prime is 22098472631. The reversal of 22098472621 is 12627489022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12586371721 + 9512100900 = 112189^2 + 97530^2 .

It is a cyclic number.

It is not a de Polignac number, because 22098472621 - 2⁷ = 22098472493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22098472631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11049236310 + 11049236311.

It is an arithmetic number, because the mean of its divisors is an integer number (11049236311).

Almost surely, 2^22098472621 is an apocalyptic number.

It is an amenable number.

22098472621 is a deficient number, since it is larger than the sum of its proper divisors (1).

22098472621 is an equidigital number, since it uses as much as digits as its factorization.

22098472621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 22098472621 in words is "twenty-two billion, ninety-eight million, four hundred seventy-two thousand, six hundred twenty-one".