121200687600 has 240 divisors, whose sum is σ = 401253080064. Its totient is φ = 31239936000.

The previous prime is 121200687547. The next prime is 121200687611. The reversal of 121200687600 is 6786002121.

121200687600 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44378235 + ... + 44380965.

Almost surely, 2^121200687600 is an apocalyptic number.

121200687600 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 121200687600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200626540032).

121200687600 is an abundant number, since it is smaller than the sum of its proper divisors (280052392464).

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

121200687600 is a wasteful number, since it uses less digits than its factorization.

121200687600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3976 (or 3965 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

Adding to 121200687600 its reverse (6786002121), we get a palindrome (127986689721).

The spelling of 121200687600 in words is "one hundred twenty-one billion, two hundred million, six hundred eighty-seven thousand, six hundred".