312121300121003 has 4 divisors (see below), whose sum is σ = 312121337509200. Its totient is φ = 312121262732808.

The previous prime is 312121300120979. The next prime is 312121300121047. The reversal of 312121300121003 is 300121003121213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 312121300121003 - 2¹² = 312121300116907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312121300111003) 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, 180098 + ... + 24985496.

It is an arithmetic number, because the mean of its divisors is an integer number (78030334377300).

Almost surely, 2^{312121300121003} is an apocalyptic number.

312121300121003 is a deficient number, since it is larger than the sum of its proper divisors (37388197).

312121300121003 is a wasteful number, since it uses less digits than its factorization.

312121300121003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37388196.

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

Adding to 312121300121003 its reverse (300121003121213), we get a palindrome (612242303242216).

The spelling of 312121300121003 in words is "three hundred twelve trillion, one hundred twenty-one billion, three hundred million, one hundred twenty-one thousand, three".