121303100 has 36 divisors (see below), whose sum is σ = 265805904. Its totient is φ = 48046080.

The previous prime is 121303033. The next prime is 121303141. The reversal of 121303100 is 1303121.

It is a super-2 number, since 2×121303100² = 29428884139220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4412 + ... + 16188.

Almost surely, 2^121303100 is an apocalyptic number.

121303100 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 121303100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132902952).

121303100 is an abundant number, since it is smaller than the sum of its proper divisors (144502804).

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

121303100 is a wasteful number, since it uses less digits than its factorization.

121303100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11894 (or 11887 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 121303100 is about 11013.7686556419. The cubic root of 121303100 is about 495.0213914505.

Adding to 121303100 its reverse (1303121), we get a palindrome (122606221).

The spelling of 121303100 in words is "one hundred twenty-one million, three hundred three thousand, one hundred".