10204654445021 has 2 divisors, whose sum is σ = 10204654445022. Its totient is φ = 10204654445020.

The previous prime is 10204654445017. The next prime is 10204654445023. The reversal of 10204654445021 is 12054445640201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9906850675225 + 297803769796 = 3147515^2 + 545714^2 .

It is a cyclic number.

It is not a de Polignac number, because 10204654445021 - 2² = 10204654445017 is a prime.

Together with 10204654445023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10204654445023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5102327222510 + 5102327222511.

It is an arithmetic number, because the mean of its divisors is an integer number (5102327222511).

Almost surely, 2^{10204654445021} is an apocalyptic number.

It is an amenable number.

10204654445021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10204654445021 is an equidigital number, since it uses as much as digits as its factorization.

10204654445021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153600, while the sum is 38.

The spelling of 10204654445021 in words is "ten trillion, two hundred four billion, six hundred fifty-four million, four hundred forty-five thousand, twenty-one".