12002221100121 has 16 divisors (see below), whose sum is σ = 18316767673728. Its totient is φ = 6848036236800.

The previous prime is 12002221100081. The next prime is 12002221100131. The reversal of 12002221100121 is 12100112220021.

It is not a de Polignac number, because 12002221100121 - 2¹⁷ = 12002220969049 is a prime.

It is a super-2 number, since 2×12002221100121² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12002221100121.

It is not an unprimeable number, because it can be changed into a prime (12002221100131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432311640 + ... + 432339401.

It is an arithmetic number, because the mean of its divisors is an integer number (1144797979608).

Almost surely, 2^{12002221100121} is an apocalyptic number.

It is an amenable number.

12002221100121 is a deficient number, since it is larger than the sum of its proper divisors (6314546573607).

12002221100121 is an equidigital number, since it uses as much as digits as its factorization.

12002221100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864651712.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12002221100121 its reverse (12100112220021), we get a palindrome (24102333320142).

The spelling of 12002221100121 in words is "twelve trillion, two billion, two hundred twenty-one million, one hundred thousand, one hundred twenty-one".