22012312123 has 2 divisors, whose sum is σ = 22012312124. Its totient is φ = 22012312122.

The previous prime is 22012312103. The next prime is 22012312129. The reversal of 22012312123 is 32121321022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22012312123 - 2¹³ = 22012303931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22012312123.

It is not a weakly prime, because it can be changed into another prime (22012312129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006156061 + 11006156062.

It is an arithmetic number, because the mean of its divisors is an integer number (11006156062).

Almost surely, 2^22012312123 is an apocalyptic number.

22012312123 is a deficient number, since it is larger than the sum of its proper divisors (1).

22012312123 is an equidigital number, since it uses as much as digits as its factorization.

22012312123 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 22012312123 its reverse (32121321022), we get a palindrome (54133633145).

The spelling of 22012312123 in words is "twenty-two billion, twelve million, three hundred twelve thousand, one hundred twenty-three".