22245442451 has 2 divisors, whose sum is σ = 22245442452. Its totient is φ = 22245442450.

The previous prime is 22245442433. The next prime is 22245442481. The reversal of 22245442451 is 15424454222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22245442451 - 2²⁶ = 22178333587 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (22245442481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11122721225 + 11122721226.

It is an arithmetic number, because the mean of its divisors is an integer number (11122721226).

Almost surely, 2^22245442451 is an apocalyptic number.

22245442451 is a deficient number, since it is larger than the sum of its proper divisors (1).

22245442451 is an equidigital number, since it uses as much as digits as its factorization.

22245442451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102400, while the sum is 35.

Adding to 22245442451 its reverse (15424454222), we get a palindrome (37669896673).

The spelling of 22245442451 in words is "twenty-two billion, two hundred forty-five million, four hundred forty-two thousand, four hundred fifty-one".