121301100 has 108 divisors (see below), whose sum is σ = 387537696. Its totient is φ = 31724160.

The previous prime is 121301087. The next prime is 121301161. The reversal of 121301100 is 1103121.

It is a super-2 number, since 2×121301100² = 29427913722420000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 46429 + ... + 48971.

It is an arithmetic number, because the mean of its divisors is an integer number (3588312).

Almost surely, 2^121301100 is an apocalyptic number.

121301100 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 121301100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193768848).

121301100 is an abundant number, since it is smaller than the sum of its proper divisors (266236596).

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

121301100 is a wasteful number, since it uses less digits than its factorization.

121301100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616 (or 2606 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 121301100 is about 11013.6778598250. The cubic root of 121301100 is about 495.0186708599.

Adding to 121301100 its reverse (1103121), we get a palindrome (122404221).

The spelling of 121301100 in words is "one hundred twenty-one million, three hundred one thousand, one hundred".