2021002112057 has 2 divisors, whose sum is σ = 2021002112058. Its totient is φ = 2021002112056.

The previous prime is 2021002112033. The next prime is 2021002112099. The reversal of 2021002112057 is 7502112001202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2019741222976 + 1260889081 = 1421176^2 + 35509^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021002112057 - 2¹⁸ = 2021001849913 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021002112557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010501056028 + 1010501056029.

It is an arithmetic number, because the mean of its divisors is an integer number (1010501056029).

Almost surely, 2^{2021002112057} is an apocalyptic number.

It is an amenable number.

2021002112057 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021002112057 is an equidigital number, since it uses as much as digits as its factorization.

2021002112057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 23.

Adding to 2021002112057 its reverse (7502112001202), we get a palindrome (9523114113259).

The spelling of 2021002112057 in words is "two trillion, twenty-one billion, two million, one hundred twelve thousand, fifty-seven".