22123344427 has 2 divisors, whose sum is σ = 22123344428. Its totient is φ = 22123344426.

The previous prime is 22123344407. The next prime is 22123344487. The reversal of 22123344427 is 72444332122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22123344427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22123344392 and 22123344401.

It is not a weakly prime, because it can be changed into another prime (22123344407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11061672213 + 11061672214.

It is an arithmetic number, because the mean of its divisors is an integer number (11061672214).

Almost surely, 2^22123344427 is an apocalyptic number.

22123344427 is a deficient number, since it is larger than the sum of its proper divisors (1).

22123344427 is an equidigital number, since it uses as much as digits as its factorization.

22123344427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 34.

Adding to 22123344427 its reverse (72444332122), we get a palindrome (94567676549).

The spelling of 22123344427 in words is "twenty-two billion, one hundred twenty-three million, three hundred forty-four thousand, four hundred twenty-seven".