22123042451 has 2 divisors, whose sum is σ = 22123042452. Its totient is φ = 22123042450.

The previous prime is 22123042423. The next prime is 22123042517. The reversal of 22123042451 is 15424032122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22123042451 - 2¹⁸ = 22122780307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22123042451.

It is not a weakly prime, because it can be changed into another prime (22123042411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11061521225 + 11061521226.

It is an arithmetic number, because the mean of its divisors is an integer number (11061521226).

Almost surely, 2^22123042451 is an apocalyptic number.

22123042451 is a deficient number, since it is larger than the sum of its proper divisors (1).

22123042451 is an equidigital number, since it uses as much as digits as its factorization.

22123042451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 22123042451 its reverse (15424032122), we get a palindrome (37547074573).

The spelling of 22123042451 in words is "twenty-two billion, one hundred twenty-three million, forty-two thousand, four hundred fifty-one".