12723857101 has 2 divisors, whose sum is σ = 12723857102. Its totient is φ = 12723857100.

The previous prime is 12723857063. The next prime is 12723857119. The reversal of 12723857101 is 10175832721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7668504900 + 5055352201 = 87570^2 + 71101^2 .

It is a cyclic number.

It is not a de Polignac number, because 12723857101 - 2⁷ = 12723856973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12723857191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6361928550 + 6361928551.

It is an arithmetic number, because the mean of its divisors is an integer number (6361928551).

Almost surely, 2^12723857101 is an apocalyptic number.

It is an amenable number.

12723857101 is a deficient number, since it is larger than the sum of its proper divisors (1).

12723857101 is an equidigital number, since it uses as much as digits as its factorization.

12723857101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 37.

The spelling of 12723857101 in words is "twelve billion, seven hundred twenty-three million, eight hundred fifty-seven thousand, one hundred one".