121113233120 has 96 divisors (see below), whose sum is σ = 312237265536. Its totient is φ = 44027712000.

The previous prime is 121113233113. The next prime is 121113233123. The reversal of 121113233120 is 21332311121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 121113233092 and 121113233101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121113233123) 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, 7121267 + ... + 7138253.

It is an arithmetic number, because the mean of its divisors is an integer number (3252471516).

Almost surely, 2^121113233120 is an apocalyptic number.

121113233120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121113233120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156118632768).

121113233120 is an abundant number, since it is smaller than the sum of its proper divisors (191124032416).

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

121113233120 is a wasteful number, since it uses less digits than its factorization.

121113233120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21064 (or 21056 counting only the distinct ones).

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

Adding to 121113233120 its reverse (21332311121), we get a palindrome (142445544241).

The spelling of 121113233120 in words is "one hundred twenty-one billion, one hundred thirteen million, two hundred thirty-three thousand, one hundred twenty".