121121111102200 has 144 divisors (see below), whose sum is σ = 319519495068480. Its totient is φ = 42623264640000.

The previous prime is 121121111102177. The next prime is 121121111102267. The reversal of 121121111102200 is 2201111121121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 79975681 + ... + 81476080.

It is an arithmetic number, because the mean of its divisors is an integer number (2218885382420).

Almost surely, 2^{121121111102200} is an apocalyptic number.

121121111102200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121121111102200 is an abundant number, since it is smaller than the sum of its proper divisors (198398383966280).

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

121121111102200 is a wasteful number, since it uses less digits than its factorization.

121121111102200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161451830 (or 161451810 counting only the distinct ones).

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

Adding to 121121111102200 its reverse (2201111121121), we get a palindrome (123322222223321).

The spelling of 121121111102200 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one hundred eleven million, one hundred two thousand, two hundred".