22246693421 has 2 divisors, whose sum is σ = 22246693422. Its totient is φ = 22246693420.

The previous prime is 22246693393. The next prime is 22246693423. The reversal of 22246693421 is 12439664222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20083141225 + 2163552196 = 141715^2 + 46514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22246693421 is a prime.

It is a Sophie Germain prime.

Together with 22246693423, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22246693423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11123346710 + 11123346711.

It is an arithmetic number, because the mean of its divisors is an integer number (11123346711).

Almost surely, 2^22246693421 is an apocalyptic number.

It is an amenable number.

22246693421 is a deficient number, since it is larger than the sum of its proper divisors (1).

22246693421 is an equidigital number, since it uses as much as digits as its factorization.

22246693421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 41.

The spelling of 22246693421 in words is "twenty-two billion, two hundred forty-six million, six hundred ninety-three thousand, four hundred twenty-one".