12000121210121 has 16 divisors (see below), whose sum is σ = 13099408344000. Its totient is φ = 10902229632000.

The previous prime is 12000121210109. The next prime is 12000121210123. The reversal of 12000121210121 is 12101212100021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12000121210121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12000121210096 and 12000121210105.

It is not an unprimeable number, because it can be changed into a prime (12000121210123) 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, 379146905 + ... + 379178553.

It is an arithmetic number, because the mean of its divisors is an integer number (818713021500).

Almost surely, 2^{12000121210121} is an apocalyptic number.

12000121210121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12000121210121 is a deficient number, since it is larger than the sum of its proper divisors (1099287133879).

12000121210121 is a wasteful number, since it uses less digits than its factorization.

12000121210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52600.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12000121210121 its reverse (12101212100021), we get a palindrome (24101333310142).

It can be divided in two parts, 12000 and 121210121, that added together give a palindrome (121222121).

The spelling of 12000121210121 in words is "twelve trillion, one hundred twenty-one million, two hundred ten thousand, one hundred twenty-one".