121222001120200 has 48 divisors (see below), whose sum is σ = 282029172750000. Its totient is φ = 48456452896320.

The previous prime is 121222001120189. The next prime is 121222001120201. The reversal of 121222001120200 is 2021100222121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121222001120201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201871650 + ... + 202471249.

It is an arithmetic number, because the mean of its divisors is an integer number (5875607765625).

Almost surely, 2^{121222001120200} is an apocalyptic number.

121222001120200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121222001120200 is an abundant number, since it is smaller than the sum of its proper divisors (160807171629800).

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

121222001120200 is a wasteful number, since it uses less digits than its factorization.

121222001120200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404344414 (or 404344405 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121222001120200 its reverse (2021100222121), we get a palindrome (123243101342321).

The spelling of 121222001120200 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one million, one hundred twenty thousand, two hundred".