830993207021 has 2 divisors, whose sum is σ = 830993207022. Its totient is φ = 830993207020.

The previous prime is 830993206961. The next prime is 830993207027. The reversal of 830993207021 is 120702399038.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 829574856100 + 1418350921 = 910810^2 + 37661^2 .

It is a cyclic number.

It is not a de Polignac number, because 830993207021 - 2¹⁴ = 830993190637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (830993207027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415496603510 + 415496603511.

It is an arithmetic number, because the mean of its divisors is an integer number (415496603511).

Almost surely, 2^830993207021 is an apocalyptic number.

It is an amenable number.

830993207021 is a deficient number, since it is larger than the sum of its proper divisors (1).

830993207021 is an equidigital number, since it uses as much as digits as its factorization.

830993207021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 830993207021 in words is "eight hundred thirty billion, nine hundred ninety-three million, two hundred seven thousand, twenty-one".