121213013303 has 4 divisors (see below), whose sum is σ = 121235971248. Its totient is φ = 121190055360.

The previous prime is 121213013297. The next prime is 121213013323. The reversal of 121213013303 is 303310312121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303310312121 = 22093 ⋅13728797.

It is a cyclic number.

It is not a de Polignac number, because 121213013303 - 2¹⁶ = 121212947767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121213013323) 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, 11471051 + ... + 11481612.

It is an arithmetic number, because the mean of its divisors is an integer number (30308992812).

Almost surely, 2^121213013303 is an apocalyptic number.

121213013303 is a deficient number, since it is larger than the sum of its proper divisors (22957945).

121213013303 is an equidigital number, since it uses as much as digits as its factorization.

121213013303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22957944.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 121213013303 its reverse (303310312121), we get a palindrome (424523325424).

The spelling of 121213013303 in words is "one hundred twenty-one billion, two hundred thirteen million, thirteen thousand, three hundred three".