22123000001 has 4 divisors (see below), whose sum is σ = 22885862100. Its totient is φ = 21360137904.

The previous prime is 22122999973. The next prime is 22123000019. The reversal of 22123000001 is 10000032122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12237669376 + 9885330625 = 110624^2 + 99425^2 .

It is a cyclic number.

It is not a de Polignac number, because 22123000001 - 2²² = 22118805697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22123000091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381431006 + ... + 381431063.

It is an arithmetic number, because the mean of its divisors is an integer number (5721465525).

Almost surely, 2^22123000001 is an apocalyptic number.

It is an amenable number.

22123000001 is a deficient number, since it is larger than the sum of its proper divisors (762862099).

22123000001 is an equidigital number, since it uses as much as digits as its factorization.

22123000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762862098.

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

Adding to 22123000001 its reverse (10000032122), we get a palindrome (32123032123).

The spelling of 22123000001 in words is "twenty-two billion, one hundred twenty-three million, one", and thus it is an aban number.