12020102112121 has 4 divisors (see below), whose sum is σ = 12020395204852. Its totient is φ = 12019809019392.

The previous prime is 12020102112059. The next prime is 12020102112241. The reversal of 12020102112121 is 12121120102021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7851007861225 + 4169094250896 = 2801965^2 + 2041836^2 .

It is a cyclic number.

It is not a de Polignac number, because 12020102112121 - 2¹¹ = 12020102110073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020102112095 and 12020102112104.

It is not an unprimeable number, because it can be changed into a prime (12020100112121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146484840 + ... + 146566873.

It is an arithmetic number, because the mean of its divisors is an integer number (3005098801213).

Almost surely, 2^{12020102112121} is an apocalyptic number.

It is an amenable number.

12020102112121 is a deficient number, since it is larger than the sum of its proper divisors (293092731).

12020102112121 is an equidigital number, since it uses as much as digits as its factorization.

12020102112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293092730.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12020102112121 its reverse (12121120102021), we get a palindrome (24141222214142).

The spelling of 12020102112121 in words is "twelve trillion, twenty billion, one hundred two million, one hundred twelve thousand, one hundred twenty-one".