121200752 has 40 divisors (see below), whose sum is σ = 255380976. Its totient is φ = 55489536.

The previous prime is 121200727. The next prime is 121200757. The reversal of 121200752 is 257002121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121200757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4043 + ... + 16085.

Almost surely, 2^121200752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121200752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127690488).

121200752 is an abundant number, since it is smaller than the sum of its proper divisors (134180224).

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

121200752 is a wasteful number, since it uses less digits than its factorization.

121200752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12105 (or 12099 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 121200752 is about 11009.1213091690. The cubic root of 121200752 is about 494.8821295376.

Adding to 121200752 its reverse (257002121), we get a palindrome (378202873).

The spelling of 121200752 in words is "one hundred twenty-one million, two hundred thousand, seven hundred fifty-two".