22231012123 has 2 divisors, whose sum is σ = 22231012124. Its totient is φ = 22231012122.

The previous prime is 22231012109. The next prime is 22231012157. The reversal of 22231012123 is 32121013222.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22231012123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22231012123.

It is not a weakly prime, because it can be changed into another prime (22231012723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11115506061 + 11115506062.

It is an arithmetic number, because the mean of its divisors is an integer number (11115506062).

Almost surely, 2^22231012123 is an apocalyptic number.

22231012123 is a deficient number, since it is larger than the sum of its proper divisors (1).

22231012123 is an equidigital number, since it uses as much as digits as its factorization.

22231012123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22231012123 its reverse (32121013222), we get a palindrome (54352025345).

The spelling of 22231012123 in words is "twenty-two billion, two hundred thirty-one million, twelve thousand, one hundred twenty-three".