12102020121 has 16 divisors (see below), whose sum is σ = 16167312000. Its totient is φ = 8052390528.

The previous prime is 12102020087. The next prime is 12102020141.

12102020121 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12102020121 - 2³⁰ = 11028278297 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12102020097 and 12102020106.

It is not an unprimeable number, because it can be changed into a prime (12102020141) 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, 5408815 + ... + 5411051.

It is an arithmetic number, because the mean of its divisors is an integer number (1010457000).

Almost surely, 2^12102020121 is an apocalyptic number.

It is an amenable number.

12102020121 is a deficient number, since it is larger than the sum of its proper divisors (4065291879).

12102020121 is a wasteful number, since it uses less digits than its factorization.

12102020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4928.

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

It can be divided in two parts, 121020 and 20121, that added together give a palindrome (141141).

The spelling of 12102020121 in words is "twelve billion, one hundred two million, twenty thousand, one hundred twenty-one".