121331323112 has 32 divisors (see below), whose sum is σ = 235368347400. Its totient is φ = 58566918144.

The previous prime is 121331323051. The next prime is 121331323153. The reversal of 121331323112 is 211323133121.

It can be written as a sum of positive squares in 4 ways, for example, as 73600434436 + 47730888676 = 271294^2 + 218474^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2372888 + ... + 2423480.

Almost surely, 2^121331323112 is an apocalyptic number.

It is an amenable number.

121331323112 is a deficient number, since it is larger than the sum of its proper divisors (114037024288).

121331323112 is a wasteful number, since it uses less digits than its factorization.

121331323112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60965 (or 60961 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

Adding to 121331323112 its reverse (211323133121), we get a palindrome (332654456233).

The spelling of 121331323112 in words is "one hundred twenty-one billion, three hundred thirty-one million, three hundred twenty-three thousand, one hundred twelve".