2021123013079 has 2 divisors, whose sum is σ = 2021123013080. Its totient is φ = 2021123013078.

The previous prime is 2021123013073. The next prime is 2021123013083. The reversal of 2021123013079 is 9703103211202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021123013079 - 2³ = 2021123013071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2021123013079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021123013071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010561506539 + 1010561506540.

It is an arithmetic number, because the mean of its divisors is an integer number (1010561506540).

Almost surely, 2^{2021123013079} is an apocalyptic number.

2021123013079 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021123013079 is an equidigital number, since it uses as much as digits as its factorization.

2021123013079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The spelling of 2021123013079 in words is "two trillion, twenty-one billion, one hundred twenty-three million, thirteen thousand, seventy-nine".