22998344981 has 2 divisors, whose sum is σ = 22998344982. Its totient is φ = 22998344980.

The previous prime is 22998344969. The next prime is 22998344987. The reversal of 22998344981 is 18944389922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14313968881 + 8684376100 = 119641^2 + 93190^2 .

It is a cyclic number.

It is not a de Polignac number, because 22998344981 - 2⁶ = 22998344917 is a prime.

It is a super-2 number, since 2×22998344981² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22998344981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22998344987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11499172490 + 11499172491.

It is an arithmetic number, because the mean of its divisors is an integer number (11499172491).

Almost surely, 2^22998344981 is an apocalyptic number.

It is an amenable number.

22998344981 is a deficient number, since it is larger than the sum of its proper divisors (1).

22998344981 is an equidigital number, since it uses as much as digits as its factorization.

22998344981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8957952, while the sum is 59.

The spelling of 22998344981 in words is "twenty-two billion, nine hundred ninety-eight million, three hundred forty-four thousand, nine hundred eighty-one".