12001404213121 has 8 divisors (see below), whose sum is σ = 13117284301824. Its totient is φ = 10931070250560.

The previous prime is 12001404213107. The next prime is 12001404213151. The reversal of 12001404213121 is 12131240410021.

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

It is a cyclic number.

It is not a de Polignac number, because 12001404213121 - 2³⁷ = 11863965259649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12001404213092 and 12001404213101.

It is not an unprimeable number, because it can be changed into a prime (12001404213101) 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, 11386530985 + ... + 11386532038.

It is an arithmetic number, because the mean of its divisors is an integer number (1639660537728).

Almost surely, 2^{12001404213121} is an apocalyptic number.

It is an amenable number.

12001404213121 is a deficient number, since it is larger than the sum of its proper divisors (1115880088703).

12001404213121 is a wasteful number, since it uses less digits than its factorization.

12001404213121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22773063071.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 12001404213121 its reverse (12131240410021), we get a palindrome (24132644623142).

The spelling of 12001404213121 in words is "twelve trillion, one billion, four hundred four million, two hundred thirteen thousand, one hundred twenty-one".