121200336 has 60 divisors (see below), whose sum is σ = 342728932. Its totient is φ = 39979008.

The previous prime is 121200323. The next prime is 121200349. The reversal of 121200336 is 633002121.

It is an interprime number because it is at equal distance from previous prime (121200323) and next prime (121200349).

It can be written as a sum of positive squares in 2 ways, for example, as 42771600 + 78428736 = 6540^2 + 8856^2 .

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

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, 9630 + ... + 18306.

Almost surely, 2^121200336 is an apocalyptic number.

121200336 is a gapful number since it is divisible by the number (16) 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 121200336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171364466).

121200336 is an abundant number, since it is smaller than the sum of its proper divisors (221528596).

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

121200336 is a wasteful number, since it uses less digits than its factorization.

121200336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8788 (or 8779 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 121200336 is about 11009.1024157285. The cubic root of 121200336 is about 494.8815633387.

Adding to 121200336 its reverse (633002121), we get a palindrome (754202457).

The spelling of 121200336 in words is "one hundred twenty-one million, two hundred thousand, three hundred thirty-six".