121101012200 has 192 divisors, whose sum is σ = 337478400000. Its totient is φ = 39513450240.

The previous prime is 121101012181. The next prime is 121101012233. The reversal of 121101012200 is 2210101121.

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, 6398351 + ... + 6417249.

It is an arithmetic number, because the mean of its divisors is an integer number (1757700000).

Almost surely, 2^121101012200 is an apocalyptic number.

121101012200 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 121101012200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168739200000).

121101012200 is an abundant number, since it is smaller than the sum of its proper divisors (216377387800).

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

121101012200 is a wasteful number, since it uses less digits than its factorization.

121101012200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19144 (or 19135 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121101012200 its reverse (2210101121), we get a palindrome (123311113321).

The spelling of 121101012200 in words is "one hundred twenty-one billion, one hundred one million, twelve thousand, two hundred".