2012512023121 has 4 divisors (see below), whose sum is σ = 2012778694512. Its totient is φ = 2012245351732.

The previous prime is 2012512023103. The next prime is 2012512023139. The reversal of 2012512023121 is 1213202152102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2012512023103) and next prime (2012512023139).

It is a cyclic number.

It is not a de Polignac number, because 2012512023121 - 2²³ = 2012503634513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012512023092 and 2012512023101.

It is not an unprimeable number, because it can be changed into a prime (2012512026121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133324375 + ... + 133339468.

It is an arithmetic number, because the mean of its divisors is an integer number (503194673628).

Almost surely, 2^{2012512023121} is an apocalyptic number.

It is an amenable number.

2012512023121 is a deficient number, since it is larger than the sum of its proper divisors (266671391).

2012512023121 is an equidigital number, since it uses as much as digits as its factorization.

2012512023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266671390.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 2012512023121 its reverse (1213202152102), we get a palindrome (3225714175223).

The spelling of 2012512023121 in words is "two trillion, twelve billion, five hundred twelve million, twenty-three thousand, one hundred twenty-one".