121320320303 has 32 divisors (see below), whose sum is σ = 151539548160. Its totient is φ = 94566476160.

The previous prime is 121320320287. The next prime is 121320320321. The reversal of 121320320303 is 303023023121.

It is not a de Polignac number, because 121320320303 - 2⁴ = 121320320287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121320320603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3295826 + ... + 3332432.

It is an arithmetic number, because the mean of its divisors is an integer number (4735610880).

Almost surely, 2^121320320303 is an apocalyptic number.

121320320303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121320320303 is a deficient number, since it is larger than the sum of its proper divisors (30219227857).

121320320303 is a wasteful number, since it uses less digits than its factorization.

121320320303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37167.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 121320320303 its reverse (303023023121), we get a palindrome (424343343424).

The spelling of 121320320303 in words is "one hundred twenty-one billion, three hundred twenty million, three hundred twenty thousand, three hundred three".