121111202111120 has 160 divisors (see below), whose sum is σ = 307173664627200. Its totient is φ = 44138802419712.

The previous prime is 121111202111071. The next prime is 121111202111129. The reversal of 121111202111120 is 21111202111121.

121111202111120 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (121111202111129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 278222759 + ... + 278657721.

It is an arithmetic number, because the mean of its divisors is an integer number (1919835403920).

Almost surely, 2^{121111202111120} is an apocalyptic number.

121111202111120 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 121111202111120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153586832313600).

121111202111120 is an abundant number, since it is smaller than the sum of its proper divisors (186062462516080).

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

121111202111120 is a wasteful number, since it uses less digits than its factorization.

121111202111120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438457 (or 438451 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121111202111120 its reverse (21111202111121), we get a palindrome (142222404222241).

Subtracting from 121111202111120 its reverse (21111202111121), we obtain a palindrome (99999999999999).

The spelling of 121111202111120 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred two million, one hundred eleven thousand, one hundred twenty".