121302321100 has 108 divisors (see below), whose sum is σ = 272476586424. Its totient is φ = 46872000000.

The previous prime is 121302321089. The next prime is 121302321109. The reversal of 121302321100 is 1123203121.

121302321100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (121302321109) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 101000500 + ... + 101001700.

Almost surely, 2^121302321100 is an apocalyptic number.

121302321100 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 121302321100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136238293212).

121302321100 is an abundant number, since it is smaller than the sum of its proper divisors (151174265324).

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

121302321100 is a wasteful number, since it uses less digits than its factorization.

121302321100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328 (or 2290 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121302321100 its reverse (1123203121), we get a palindrome (122425524221).

The spelling of 121302321100 in words is "one hundred twenty-one billion, three hundred two million, three hundred twenty-one thousand, one hundred".