121003323112 has 64 divisors (see below), whose sum is σ = 275375514240. Its totient is φ = 48660480000.

The previous prime is 121003323109. The next prime is 121003323113. The reversal of 121003323112 is 211323300121.

It is a self number, because there is not a number n which added to its sum of digits gives 121003323112.

It is not an unprimeable number, because it can be changed into a prime (121003323113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123112 + ... + 507112.

It is an arithmetic number, because the mean of its divisors is an integer number (4302742410).

Almost surely, 2^121003323112 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 121003323112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137687757120).

121003323112 is an abundant number, since it is smaller than the sum of its proper divisors (154372191128).

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

121003323112 is a wasteful number, since it uses less digits than its factorization.

121003323112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384362 (or 384358 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121003323112 its reverse (211323300121), we get a palindrome (332326623233).

The spelling of 121003323112 in words is "one hundred twenty-one billion, three million, three hundred twenty-three thousand, one hundred twelve".