121003323120 has 160 divisors (see below), whose sum is σ = 418340635200. Its totient is φ = 32147444736.

The previous prime is 121003323113. The next prime is 121003323143. The reversal of 121003323120 is 21323300121.

121003323120 is a `hidden beast` number, since 1 + 21 + 0 + 0 + 332 + 312 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121003323093 and 121003323102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 476914 + ... + 685166.

It is an arithmetic number, because the mean of its divisors is an integer number (2614628970).

Almost surely, 2^121003323120 is an apocalyptic number.

121003323120 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 121003323120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209170317600).

121003323120 is an abundant number, since it is smaller than the sum of its proper divisors (297337312080).

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

121003323120 is a wasteful number, since it uses less digits than its factorization.

121003323120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208544 (or 208532 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 121003323120 its reverse (21323300121), we get a palindrome (142326623241).

The spelling of 121003323120 in words is "one hundred twenty-one billion, three million, three hundred twenty-three thousand, one hundred twenty".