22281181123 has 2 divisors, whose sum is σ = 22281181124. Its totient is φ = 22281181122.

The previous prime is 22281181103. The next prime is 22281181213. The reversal of 22281181123 is 32118118222.

Together with next prime (22281181213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22281181123 is a prime.

It is a super-2 number, since 2×22281181123² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22281181103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11140590561 + 11140590562.

It is an arithmetic number, because the mean of its divisors is an integer number (11140590562).

Almost surely, 2^22281181123 is an apocalyptic number.

22281181123 is a deficient number, since it is larger than the sum of its proper divisors (1).

22281181123 is an equidigital number, since it uses as much as digits as its factorization.

22281181123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072, while the sum is 31.

Adding to 22281181123 its reverse (32118118222), we get a palindrome (54399299345).

The spelling of 22281181123 in words is "twenty-two billion, two hundred eighty-one million, one hundred eighty-one thousand, one hundred twenty-three".