22121061497 has 2 divisors, whose sum is σ = 22121061498. Its totient is φ = 22121061496.

The previous prime is 22121061481. The next prime is 22121061503. The reversal of 22121061497 is 79416012122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16543361641 + 5577699856 = 128621^2 + 74684^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121061497 - 2⁴ = 22121061481 is a prime.

It is not a weakly prime, because it can be changed into another prime (22121261497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060530748 + 11060530749.

It is an arithmetic number, because the mean of its divisors is an integer number (11060530749).

Almost surely, 2^22121061497 is an apocalyptic number.

It is an amenable number.

22121061497 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121061497 is an equidigital number, since it uses as much as digits as its factorization.

22121061497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The spelling of 22121061497 in words is "twenty-two billion, one hundred twenty-one million, sixty-one thousand, four hundred ninety-seven".