12000122001 has 48 divisors (see below), whose sum is σ = 20763449280. Its totient is φ = 6829704000.

The previous prime is 12000121981. The next prime is 12000122021. The reversal of 12000122001 is 10022100021.

It is an interprime number because it is at equal distance from previous prime (12000121981) and next prime (12000122021).

It is not a de Polignac number, because 12000122001 - 2⁶ = 12000121937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (12000122021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 314005 + ... + 350141.

It is an arithmetic number, because the mean of its divisors is an integer number (432571860).

Almost surely, 2^12000122001 is an apocalyptic number.

It is an amenable number.

12000122001 is a deficient number, since it is larger than the sum of its proper divisors (8763327279).

12000122001 is a wasteful number, since it uses less digits than its factorization.

12000122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36411 (or 36398 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12000122001 its reverse (10022100021), we get a palindrome (22022222022).

The spelling of 12000122001 in words is "twelve billion, one hundred twenty-two thousand, one".