121232700 has 126 divisors (see below), whose sum is σ = 394669184. Its totient is φ = 32309280.

The previous prime is 121232659. The next prime is 121232707. The reversal of 121232700 is 7232121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121232707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 72069 + ... + 73731.

Almost surely, 2^121232700 is an apocalyptic number.

121232700 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 121232700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197334592).

121232700 is an abundant number, since it is smaller than the sum of its proper divisors (273436484).

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

121232700 is a wasteful number, since it uses less digits than its factorization.

121232700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695 (or 1673 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 121232700 is about 11010.5721922160. The cubic root of 121232700 is about 494.9256086553.

Adding to 121232700 its reverse (7232121), we get a palindrome (128464821).

The spelling of 121232700 in words is "one hundred twenty-one million, two hundred thirty-two thousand, seven hundred".