121321121233 has 24 divisors (see below), whose sum is σ = 133278138720. Its totient is φ = 110374467840.

The previous prime is 121321121209. The next prime is 121321121239. The reversal of 121321121233 is 332121123121.

It is not a de Polignac number, because 121321121233 - 2²¹ = 121319024081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121321121239) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3400618 + ... + 3436108.

It is an arithmetic number, because the mean of its divisors is an integer number (5553255780).

Almost surely, 2^121321121233 is an apocalyptic number.

121321121233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121321121233 is a deficient number, since it is larger than the sum of its proper divisors (11957017487).

121321121233 is a wasteful number, since it uses less digits than its factorization.

121321121233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35809 (or 35796 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

Adding to 121321121233 its reverse (332121123121), we get a palindrome (453442244354).

The spelling of 121321121233 in words is "one hundred twenty-one billion, three hundred twenty-one million, one hundred twenty-one thousand, two hundred thirty-three".