12000201220021 has 16 divisors (see below), whose sum is σ = 14521420008576. Its totient is φ = 9680722523136.

The previous prime is 12000201220009. The next prime is 12000201220031. The reversal of 12000201220021 is 12002210200021.

It is a happy number.

It is not a de Polignac number, because 12000201220021 - 2⁷ = 12000201219893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12000201219983 and 12000201220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000201220031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10641750 + ... + 11715256.

It is an arithmetic number, because the mean of its divisors is an integer number (907588750536).

Almost surely, 2^{12000201220021} is an apocalyptic number.

It is an amenable number.

12000201220021 is a deficient number, since it is larger than the sum of its proper divisors (2521218788555).

12000201220021 is a wasteful number, since it uses less digits than its factorization.

12000201220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167468.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12000201220021 its reverse (12002210200021), we get a palindrome (24002411420042).

The spelling of 12000201220021 in words is "twelve trillion, two hundred one million, two hundred twenty thousand, twenty-one".