6172266272021 has 2 divisors, whose sum is σ = 6172266272022. Its totient is φ = 6172266272020.

The previous prime is 6172266271943. The next prime is 6172266272041. The reversal of 6172266272021 is 1202726622716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6144697322500 + 27568949521 = 2478850^2 + 166039^2 .

It is a cyclic number.

It is not a de Polignac number, because 6172266272021 - 2³⁴ = 6155086402837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6172266272041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3086133136010 + 3086133136011.

It is an arithmetic number, because the mean of its divisors is an integer number (3086133136011).

Almost surely, 2^{6172266272021} is an apocalyptic number.

It is an amenable number.

6172266272021 is a deficient number, since it is larger than the sum of its proper divisors (1).

6172266272021 is an equidigital number, since it uses as much as digits as its factorization.

6172266272021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 6172266272021 in words is "six trillion, one hundred seventy-two billion, two hundred sixty-six million, two hundred seventy-two thousand, twenty-one".