22121553299 has 2 divisors, whose sum is σ = 22121553300. Its totient is φ = 22121553298.

The previous prime is 22121553287. The next prime is 22121553359. The reversal of 22121553299 is 99235512122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22121553299 - 2¹⁶ = 22121487763 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (22121553499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060776649 + 11060776650.

It is an arithmetic number, because the mean of its divisors is an integer number (11060776650).

Almost surely, 2^22121553299 is an apocalyptic number.

22121553299 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121553299 is an equidigital number, since it uses as much as digits as its factorization.

22121553299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 41.

The spelling of 22121553299 in words is "twenty-two billion, one hundred twenty-one million, five hundred fifty-three thousand, two hundred ninety-nine".