121112133121 has 16 divisors (see below), whose sum is σ = 140875545600. Its totient is φ = 101967033168.

The previous prime is 121112133101. The next prime is 121112133139. The reversal of 121112133121 is 121331211121.

It is not a de Polignac number, because 121112133121 - 2²⁹ = 120575262209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121112133101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385210 + ... + 624988.

It is an arithmetic number, because the mean of its divisors is an integer number (8804721600).

Almost surely, 2^121112133121 is an apocalyptic number.

It is an amenable number.

121112133121 is a deficient number, since it is larger than the sum of its proper divisors (19763412479).

121112133121 is a wasteful number, since it uses less digits than its factorization.

121112133121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241068.

The product of its digits is 72, while the sum is 19.

Adding to 121112133121 its reverse (121331211121), we get a palindrome (242443344242).

The spelling of 121112133121 in words is "one hundred twenty-one billion, one hundred twelve million, one hundred thirty-three thousand, one hundred twenty-one".