12123021122001 has 12 divisors (see below), whose sum is σ = 17574247229812. Its totient is φ = 8052837133536.

The previous prime is 12123021121969. The next prime is 12123021122021. The reversal of 12123021122001 is 10022112032121.

12123021122001 is a `hidden beast` number, since 1 + 2 + 1 + 230 + 211 + 220 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2983288928400 + 9139732193601 = 1727220^2 + 3023199^2 .

It is not a de Polignac number, because 12123021122001 - 2⁵ = 12123021121969 is a prime.

It is a super-2 number, since 2×12123021122001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12123021122021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2431409686 + ... + 2431414671.

Almost surely, 2^{12123021122001} is an apocalyptic number.

It is an amenable number.

12123021122001 is a deficient number, since it is larger than the sum of its proper divisors (5451226107811).

12123021122001 is a wasteful number, since it uses less digits than its factorization.

12123021122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4862824640 (or 4862824637 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12123021122001 its reverse (10022112032121), we get a palindrome (22145133154122).

The spelling of 12123021122001 in words is "twelve trillion, one hundred twenty-three billion, twenty-one million, one hundred twenty-two thousand, one".