22001000123 has 2 divisors, whose sum is σ = 22001000124. Its totient is φ = 22001000122.

The previous prime is 22001000107. The next prime is 22001000171. The reversal of 22001000123 is 32100010022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22001000123 - 2⁴ = 22001000107 is a prime.

It is not a weakly prime, because it can be changed into another prime (22001000023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000500061 + 11000500062.

It is an arithmetic number, because the mean of its divisors is an integer number (11000500062).

Almost surely, 2^22001000123 is an apocalyptic number.

22001000123 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001000123 is an equidigital number, since it uses as much as digits as its factorization.

22001000123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 22001000123 its reverse (32100010022), we get a palindrome (54101010145).

The spelling of 22001000123 in words is "twenty-two billion, one million, one hundred twenty-three", and thus it is an aban number.