22021330291 has 2 divisors, whose sum is σ = 22021330292. Its totient is φ = 22021330290.

The previous prime is 22021330259. The next prime is 22021330313. The reversal of 22021330291 is 19203312022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22021330291 - 2⁵ = 22021330259 is a prime.

It is not a weakly prime, because it can be changed into another prime (22021330211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010665145 + 11010665146.

It is an arithmetic number, because the mean of its divisors is an integer number (11010665146).

Almost surely, 2^22021330291 is an apocalyptic number.

22021330291 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021330291 is an equidigital number, since it uses as much as digits as its factorization.

22021330291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 22021330291 in words is "twenty-two billion, twenty-one million, three hundred thirty thousand, two hundred ninety-one".