12497210881 has 2 divisors, whose sum is σ = 12497210882. Its totient is φ = 12497210880.

The previous prime is 12497210851. The next prime is 12497210893. The reversal of 12497210881 is 18801279421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7371939600 + 5125271281 = 85860^2 + 71591^2 .

It is a cyclic number.

It is not a de Polignac number, because 12497210881 - 2⁷ = 12497210753 is a prime.

It is a super-2 number, since 2×12497210881² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12497210821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6248605440 + 6248605441.

It is an arithmetic number, because the mean of its divisors is an integer number (6248605441).

Almost surely, 2^12497210881 is an apocalyptic number.

It is an amenable number.

12497210881 is a deficient number, since it is larger than the sum of its proper divisors (1).

12497210881 is an equidigital number, since it uses as much as digits as its factorization.

12497210881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 43.

The spelling of 12497210881 in words is "twelve billion, four hundred ninety-seven million, two hundred ten thousand, eight hundred eighty-one".