121233321121 has 16 divisors (see below), whose sum is σ = 137412561600. Its totient is φ = 105946948800.

The previous prime is 121233321119. The next prime is 121233321169. The reversal of 121233321121 is 121123332121.

It is not a de Polignac number, because 121233321121 - 2¹ = 121233321119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121233321092 and 121233321101.

It is not an unprimeable number, because it can be changed into a prime (121233321191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 756735 + ... + 902836.

It is an arithmetic number, because the mean of its divisors is an integer number (8588285100).

Almost surely, 2^121233321121 is an apocalyptic number.

121233321121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121233321121 is a deficient number, since it is larger than the sum of its proper divisors (16179240479).

121233321121 is a wasteful number, since it uses less digits than its factorization.

121233321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659840.

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

Adding to 121233321121 its reverse (121123332121), we get a palindrome (242356653242).

It can be divided in two parts, 1212 and 33321121, that added together give a palindrome (33322333).

The spelling of 121233321121 in words is "one hundred twenty-one billion, two hundred thirty-three million, three hundred twenty-one thousand, one hundred twenty-one".