121312392003 has 96 divisors (see below), whose sum is σ = 214341603840. Its totient is φ = 65160391680.

The previous prime is 121312392001. The next prime is 121312392029. The reversal of 121312392003 is 300293213121.

It is not a de Polignac number, because 121312392003 - 2¹ = 121312392001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121312392001) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5328801 + ... + 5351517.

It is an arithmetic number, because the mean of its divisors is an integer number (2232725040).

Almost surely, 2^121312392003 is an apocalyptic number.

121312392003 is a deficient number, since it is larger than the sum of its proper divisors (93029211837).

121312392003 is a wasteful number, since it uses less digits than its factorization.

121312392003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22937 (or 22934 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

It can be divided in two parts, 121312 and 392003, that added together give a palindrome (513315).

The spelling of 121312392003 in words is "one hundred twenty-one billion, three hundred twelve million, three hundred ninety-two thousand, three".