3012131212121 has 4 divisors (see below), whose sum is σ = 3012553855872. Its totient is φ = 3011708568372.

The previous prime is 3012131212009. The next prime is 3012131212151. The reversal of 3012131212121 is 1212121312103.

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 a cyclic number.

It is not a de Polignac number, because 3012131212121 - 2¹⁰ = 3012131211097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3012131212093 and 3012131212102.

It is not an unprimeable number, because it can be changed into a prime (3012131212151) 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, 211311185 + ... + 211325438.

It is an arithmetic number, because the mean of its divisors is an integer number (753138463968).

Almost surely, 2^{3012131212121} is an apocalyptic number.

It is an amenable number.

3012131212121 is a deficient number, since it is larger than the sum of its proper divisors (422643751).

3012131212121 is an equidigital number, since it uses as much as digits as its factorization.

3012131212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422643750.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 3012131212121 its reverse (1212121312103), we get a palindrome (4224252524224).

The spelling of 3012131212121 in words is "three trillion, twelve billion, one hundred thirty-one million, two hundred twelve thousand, one hundred twenty-one".