121072600 has 72 divisors (see below), whose sum is σ = 309472380. Its totient is φ = 44017600.

The previous prime is 121072561. The next prime is 121072619. The reversal of 121072600 is 6270121.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 21699 + ... + 26701.

Almost surely, 2^121072600 is an apocalyptic number.

121072600 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 121072600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154736190).

121072600 is an abundant number, since it is smaller than the sum of its proper divisors (188399780).

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

121072600 is a wasteful number, since it uses less digits than its factorization.

121072600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5041 (or 5021 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 121072600 is about 11003.2995051484. The cubic root of 121072600 is about 494.7076462960.

The spelling of 121072600 in words is "one hundred twenty-one million, seventy-two thousand, six hundred".