10228297987981 has 2 divisors, whose sum is σ = 10228297987982. Its totient is φ = 10228297987980.

The previous prime is 10228297987913. The next prime is 10228297988021. The reversal of 10228297987981 is 18978979282201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7721034755625 + 2507263232356 = 2778675^2 + 1583434^2 .

It is a cyclic number.

It is not a de Polignac number, because 10228297987981 - 2⁹ = 10228297987469 is a prime.

It is a super-2 number, since 2×10228297987981² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10228297984981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5114148993990 + 5114148993991.

It is an arithmetic number, because the mean of its divisors is an integer number (5114148993991).

Almost surely, 2^{10228297987981} is an apocalyptic number.

It is an amenable number.

10228297987981 is a deficient number, since it is larger than the sum of its proper divisors (1).

10228297987981 is an equidigital number, since it uses as much as digits as its factorization.

10228297987981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 146313216, while the sum is 73.

The spelling of 10228297987981 in words is "ten trillion, two hundred twenty-eight billion, two hundred ninety-seven million, nine hundred eighty-seven thousand, nine hundred eighty-one".