22021110691 has 2 divisors, whose sum is σ = 22021110692. Its totient is φ = 22021110690.

The previous prime is 22021110659. The next prime is 22021110707. The reversal of 22021110691 is 19601112022.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22021110691 - 2⁵ = 22021110659 is a prime.

It is not a weakly prime, because it can be changed into another prime (22021110641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010555345 + 11010555346.

It is an arithmetic number, because the mean of its divisors is an integer number (11010555346).

Almost surely, 2^22021110691 is an apocalyptic number.

22021110691 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021110691 is an equidigital number, since it uses as much as digits as its factorization.

22021110691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 22021110691 in words is "twenty-two billion, twenty-one million, one hundred ten thousand, six hundred ninety-one".