2641196021 has 2 divisors, whose sum is σ = 2641196022. Its totient is φ = 2641196020.

The previous prime is 2641195993. The next prime is 2641196029. The reversal of 2641196021 is 1206911462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2625435121 + 15760900 = 51239^2 + 3970^2 .

It is a cyclic number.

It is not a de Polignac number, because 2641196021 - 2¹⁸ = 2640933877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2641196029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320598010 + 1320598011.

It is an arithmetic number, because the mean of its divisors is an integer number (1320598011).

Almost surely, 2^2641196021 is an apocalyptic number.

It is an amenable number.

2641196021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2641196021 is an equidigital number, since it uses as much as digits as its factorization.

2641196021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 2641196021 is about 51392.5677603289. The cubic root of 2641196021 is about 1382.2933268985.

The spelling of 2641196021 in words is "two billion, six hundred forty-one million, one hundred ninety-six thousand, twenty-one".