12021122001 has 8 divisors (see below), whose sum is σ = 18317900224. Its totient is φ = 6869212560.

The previous prime is 12021121997. The next prime is 12021122033. The reversal of 12021122001 is 10022112021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12021122001 - 2² = 12021121997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021122081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286217170 + ... + 286217211.

It is an arithmetic number, because the mean of its divisors is an integer number (2289737528).

Almost surely, 2^12021122001 is an apocalyptic number.

It is an amenable number.

12021122001 is a deficient number, since it is larger than the sum of its proper divisors (6296778223).

12021122001 is an equidigital number, since it uses as much as digits as its factorization.

12021122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572434391.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12021122001 its reverse (10022112021), we get a palindrome (22043234022).

The spelling of 12021122001 in words is "twelve billion, twenty-one million, one hundred twenty-two thousand, one".