12100109977 has 2 divisors, whose sum is σ = 12100109978. Its totient is φ = 12100109976.

The previous prime is 12100109927. The next prime is 12100110007. The reversal of 12100109977 is 77990100121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11059466896 + 1040643081 = 105164^2 + 32259^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12100109977 is a prime.

It is a super-2 number, since 2×12100109977² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12100109927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050054988 + 6050054989.

It is an arithmetic number, because the mean of its divisors is an integer number (6050054989).

Almost surely, 2^12100109977 is an apocalyptic number.

It is an amenable number.

12100109977 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100109977 is an equidigital number, since it uses as much as digits as its factorization.

12100109977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7938, while the sum is 37.

The spelling of 12100109977 in words is "twelve billion, one hundred million, one hundred nine thousand, nine hundred seventy-seven".