2021110003021 has 2 divisors, whose sum is σ = 2021110003022. Its totient is φ = 2021110003020.

The previous prime is 2021110002959. The next prime is 2021110003027. The reversal of 2021110003021 is 1203000111202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1198179808996 + 822930194025 = 1094614^2 + 907155^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021110003021 - 2³⁷ = 1883671049549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021110002992 and 2021110003010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021110003027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010555001510 + 1010555001511.

It is an arithmetic number, because the mean of its divisors is an integer number (1010555001511).

Almost surely, 2^{2021110003021} is an apocalyptic number.

It is an amenable number.

2021110003021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021110003021 is an equidigital number, since it uses as much as digits as its factorization.

2021110003021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 2021110003021 its reverse (1203000111202), we get a palindrome (3224110114223).

The spelling of 2021110003021 in words is "two trillion, twenty-one billion, one hundred ten million, three thousand, twenty-one".