22145320123 has 2 divisors, whose sum is σ = 22145320124. Its totient is φ = 22145320122.

The previous prime is 22145320121. The next prime is 22145320139. The reversal of 22145320123 is 32102354122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22145320123 - 2¹ = 22145320121 is a prime.

Together with 22145320121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22145320121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11072660061 + 11072660062.

It is an arithmetic number, because the mean of its divisors is an integer number (11072660062).

Almost surely, 2^22145320123 is an apocalyptic number.

22145320123 is a deficient number, since it is larger than the sum of its proper divisors (1).

22145320123 is an equidigital number, since it uses as much as digits as its factorization.

22145320123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 22145320123 its reverse (32102354122), we get a palindrome (54247674245).

The spelling of 22145320123 in words is "twenty-two billion, one hundred forty-five million, three hundred twenty thousand, one hundred twenty-three".