12000020120121 has 12 divisors (see below), whose sum is σ = 17586806347376. Its totient is φ = 7272739466520.

The previous prime is 12000020120113. The next prime is 12000020120141. The reversal of 12000020120121 is 12102102000021.

It is not a de Polignac number, because 12000020120121 - 2³ = 12000020120113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12000020120097 and 12000020120106.

It is not an unprimeable number, because it can be changed into a prime (12000020120141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16528952971 + ... + 16528953696.

Almost surely, 2^{12000020120121} is an apocalyptic number.

12000020120121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12000020120121 is a deficient number, since it is larger than the sum of its proper divisors (5586786227255).

12000020120121 is a wasteful number, since it uses less digits than its factorization.

12000020120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33057906692 (or 33057906681 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12000020120121 its reverse (12102102000021), we get a palindrome (24102122120142).

The spelling of 12000020120121 in words is "twelve trillion, twenty million, one hundred twenty thousand, one hundred twenty-one".