121132331144 has 64 divisors (see below), whose sum is σ = 256498056000. Its totient is φ = 53123454720.

The previous prime is 121132331129. The next prime is 121132331153. The reversal of 121132331144 is 441133231121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3707102 + ... + 3739634.

It is an arithmetic number, because the mean of its divisors is an integer number (4007782125).

Almost surely, 2^121132331144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121132331144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128249028000).

121132331144 is an abundant number, since it is smaller than the sum of its proper divisors (135365724856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121132331144 is a wasteful number, since it uses less digits than its factorization.

121132331144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34038 (or 34034 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

Adding to 121132331144 its reverse (441133231121), we get a palindrome (562265562265).

The spelling of 121132331144 in words is "one hundred twenty-one billion, one hundred thirty-two million, three hundred thirty-one thousand, one hundred forty-four".