12201312997 has 2 divisors, whose sum is σ = 12201312998. Its totient is φ = 12201312996.

The previous prime is 12201312967. The next prime is 12201313013. The reversal of 12201312997 is 79921310221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6482021121 + 5719291876 = 80511^2 + 75626^2 .

It is a cyclic number.

It is not a de Polignac number, because 12201312997 - 2⁷ = 12201312869 is a prime.

It is a super-2 number, since 2×12201312997² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12201312967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100656498 + 6100656499.

It is an arithmetic number, because the mean of its divisors is an integer number (6100656499).

Almost surely, 2^12201312997 is an apocalyptic number.

It is an amenable number.

12201312997 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201312997 is an equidigital number, since it uses as much as digits as its factorization.

12201312997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The spelling of 12201312997 in words is "twelve billion, two hundred one million, three hundred twelve thousand, nine hundred ninety-seven".