121110120121200 has 120 divisors (see below), whose sum is σ = 443378382645888. Its totient is φ = 27682313168640.

The previous prime is 121110120121183. The next prime is 121110120121201. The reversal of 121110120121200 is 2121021011121.

It is a happy number.

121110120121200 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 (120).

It is a super-2 number, since 2×121110120121200² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121110120121200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121110120121201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7208927322 + ... + 7208944121.

Almost surely, 2^{121110120121200} is an apocalyptic number.

121110120121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121110120121200 is an abundant number, since it is smaller than the sum of its proper divisors (322268262524688).

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

121110120121200 is a wasteful number, since it uses less digits than its factorization.

121110120121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14417871471 (or 14417871460 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121110120121200 its reverse (2121021011121), we get a palindrome (123231141132321).

The spelling of 121110120121200 in words is "one hundred twenty-one trillion, one hundred ten billion, one hundred twenty million, one hundred twenty-one thousand, two hundred".