2112003313121 has 4 divisors (see below), whose sum is σ = 2274465106452. Its totient is φ = 1949541519792.

The previous prime is 2112003313099. The next prime is 2112003313141. The reversal of 2112003313121 is 1213133002112.

It is a happy number.

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 629307437521 + 1482695875600 = 793289^2 + 1217660^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112003313121 - 2¹⁴ = 2112003296737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112003313093 and 2112003313102.

It is not an unprimeable number, because it can be changed into a prime (2112003313141) 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, 81230896646 + ... + 81230896671.

It is an arithmetic number, because the mean of its divisors is an integer number (568616276613).

Almost surely, 2^{2112003313121} is an apocalyptic number.

It is an amenable number.

2112003313121 is a deficient number, since it is larger than the sum of its proper divisors (162461793331).

2112003313121 is a wasteful number, since it uses less digits than its factorization.

2112003313121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162461793330.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2112003313121 its reverse (1213133002112), we get a palindrome (3325136315233).

The spelling of 2112003313121 in words is "two trillion, one hundred twelve billion, three million, three hundred thirteen thousand, one hundred twenty-one".