1020012100879 has 2 divisors, whose sum is σ = 1020012100880. Its totient is φ = 1020012100878.

The previous prime is 1020012100873. The next prime is 1020012100883. The reversal of 1020012100879 is 9780012100201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020012100879 - 2³ = 1020012100871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020012100879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020012100871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510006050439 + 510006050440.

It is an arithmetic number, because the mean of its divisors is an integer number (510006050440).

Almost surely, 2^{1020012100879} is an apocalyptic number.

1020012100879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020012100879 is an equidigital number, since it uses as much as digits as its factorization.

1020012100879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 31.

The spelling of 1020012100879 in words is "one trillion, twenty billion, twelve million, one hundred thousand, eight hundred seventy-nine".