12874951421 has 2 divisors, whose sum is σ = 12874951422. Its totient is φ = 12874951420.

The previous prime is 12874951409. The next prime is 12874951501. The reversal of 12874951421 is 12415947821.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12743023225 + 131928196 = 112885^2 + 11486^2 .

It is a cyclic number.

It is not a de Polignac number, because 12874951421 - 2¹⁰ = 12874950397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12874951121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6437475710 + 6437475711.

It is an arithmetic number, because the mean of its divisors is an integer number (6437475711).

Almost surely, 2^12874951421 is an apocalyptic number.

It is an amenable number.

12874951421 is a deficient number, since it is larger than the sum of its proper divisors (1).

12874951421 is an equidigital number, since it uses as much as digits as its factorization.

12874951421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 44.

The spelling of 12874951421 in words is "twelve billion, eight hundred seventy-four million, nine hundred fifty-one thousand, four hundred twenty-one".