2021001012089 has 2 divisors, whose sum is σ = 2021001012090. Its totient is φ = 2021001012088.

The previous prime is 2021001012053. The next prime is 2021001012097. The reversal of 2021001012089 is 9802101001202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1025595722089 + 995405290000 = 1012717^2 + 997700^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021001012089 - 2⁴⁰ = 921489384313 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021001012689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010500506044 + 1010500506045.

It is an arithmetic number, because the mean of its divisors is an integer number (1010500506045).

Almost surely, 2^{2021001012089} is an apocalyptic number.

It is an amenable number.

2021001012089 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021001012089 is an equidigital number, since it uses as much as digits as its factorization.

2021001012089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 2021001012089 in words is "two trillion, twenty-one billion, one million, twelve thousand, eighty-nine".