12000212002121 has 16 divisors (see below), whose sum is σ = 13741290952704. Its totient is φ = 10265825341584.

The previous prime is 12000212002111. The next prime is 12000212002139. The reversal of 12000212002121 is 12120021200021.

It is a cyclic number.

It is not a de Polignac number, because 12000212002121 - 2³⁴ = 11983032132937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12000212002096 and 12000212002105.

It is not an unprimeable number, because it can be changed into a prime (12000212002111) 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, 127659680 + ... + 127753646.

It is an arithmetic number, because the mean of its divisors is an integer number (858830684544).

Almost surely, 2^{12000212002121} is an apocalyptic number.

It is an amenable number.

12000212002121 is a deficient number, since it is larger than the sum of its proper divisors (1741078950583).

12000212002121 is an equidigital number, since it uses as much as digits as its factorization.

12000212002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129380.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12000212002121 its reverse (12120021200021), we get a palindrome (24120233202142).

The spelling of 12000212002121 in words is "twelve trillion, two hundred twelve million, two thousand, one hundred twenty-one".