22421252543 has 2 divisors, whose sum is σ = 22421252544. Its totient is φ = 22421252542.

The previous prime is 22421252527. The next prime is 22421252561. The reversal of 22421252543 is 34525212422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22421252543 - 2⁴ = 22421252527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22421252143) 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, 11210626271 + 11210626272.

It is an arithmetic number, because the mean of its divisors is an integer number (11210626272).

Almost surely, 2^22421252543 is an apocalyptic number.

22421252543 is a deficient number, since it is larger than the sum of its proper divisors (1).

22421252543 is an equidigital number, since it uses as much as digits as its factorization.

22421252543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38400, while the sum is 32.

Adding to 22421252543 its reverse (34525212422), we get a palindrome (56946464965).

The spelling of 22421252543 in words is "twenty-two billion, four hundred twenty-one million, two hundred fifty-two thousand, five hundred forty-three".