22421042507 has 2 divisors, whose sum is σ = 22421042508. Its totient is φ = 22421042506.

The previous prime is 22421042491. The next prime is 22421042543. The reversal of 22421042507 is 70524012422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22421042507 - 2⁴ = 22421042491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22421042507.

It is not a weakly prime, because it can be changed into another prime (22421002507) 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, 11210521253 + 11210521254.

It is an arithmetic number, because the mean of its divisors is an integer number (11210521254).

Almost surely, 2^22421042507 is an apocalyptic number.

22421042507 is a deficient number, since it is larger than the sum of its proper divisors (1).

22421042507 is an equidigital number, since it uses as much as digits as its factorization.

22421042507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 29.

Adding to 22421042507 its reverse (70524012422), we get a palindrome (92945054929).

The spelling of 22421042507 in words is "twenty-two billion, four hundred twenty-one million, forty-two thousand, five hundred seven".