22235667791 has 2 divisors, whose sum is σ = 22235667792. Its totient is φ = 22235667790.

The previous prime is 22235667781. The next prime is 22235667793. The reversal of 22235667791 is 19776653222.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22235667791 is a prime.

It is a super-2 number, since 2×22235667791² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 22235667793, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22235667793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11117833895 + 11117833896.

It is an arithmetic number, because the mean of its divisors is an integer number (11117833896).

Almost surely, 2^22235667791 is an apocalyptic number.

22235667791 is a deficient number, since it is larger than the sum of its proper divisors (1).

22235667791 is an equidigital number, since it uses as much as digits as its factorization.

22235667791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 50.

The spelling of 22235667791 in words is "twenty-two billion, two hundred thirty-five million, six hundred sixty-seven thousand, seven hundred ninety-one".