1012199999077 has 2 divisors, whose sum is σ = 1012199999078. Its totient is φ = 1012199999076.

The previous prime is 1012199999051. The next prime is 1012199999081. The reversal of 1012199999077 is 7709999912101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 806114869921 + 206085129156 = 897839^2 + 453966^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012199999077 - 2⁷ = 1012199998949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012199999087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506099999538 + 506099999539.

It is an arithmetic number, because the mean of its divisors is an integer number (506099999539).

Almost surely, 2^{1012199999077} is an apocalyptic number.

It is an amenable number.

1012199999077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012199999077 is an equidigital number, since it uses as much as digits as its factorization.

1012199999077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5786802, while the sum is 64.

The spelling of 1012199999077 in words is "one trillion, twelve billion, one hundred ninety-nine million, nine hundred ninety-nine thousand, seventy-seven".