121133023121 has 4 divisors (see below), whose sum is σ = 132145116144. Its totient is φ = 110120930100.

The previous prime is 121133023069. The next prime is 121133023129. The reversal of 121133023121 is 121320331121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121133023121 - 2¹⁰ = 121133022097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121133023093 and 121133023102.

It is not an unprimeable number, because it can be changed into a prime (121133023129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5506046495 + ... + 5506046516.

It is an arithmetic number, because the mean of its divisors is an integer number (33036279036).

Almost surely, 2^121133023121 is an apocalyptic number.

121133023121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121133023121 is a deficient number, since it is larger than the sum of its proper divisors (11012093023).

121133023121 is a wasteful number, since it uses less digits than its factorization.

121133023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11012093022.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 121133023121 its reverse (121320331121), we get a palindrome (242453354242).

The spelling of 121133023121 in words is "one hundred twenty-one billion, one hundred thirty-three million, twenty-three thousand, one hundred twenty-one".