121211200201200 has 120 divisors (see below), whose sum is σ = 388283018260608. Its totient is φ = 32322725303040.

The previous prime is 121211200201187. The next prime is 121211200201261. The reversal of 121211200201200 is 2102002112121.

It is a tau number, because it is divible by the number of its divisors (120).

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 121211200201200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181927077 + ... + 182592123.

Almost surely, 2^{121211200201200} is an apocalyptic number.

121211200201200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121211200201200 is an abundant number, since it is smaller than the sum of its proper divisors (267071818059408).

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

121211200201200 is a wasteful number, since it uses less digits than its factorization.

121211200201200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816951 (or 816940 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121211200201200 its reverse (2102002112121), we get a palindrome (123313202313321).

The spelling of 121211200201200 in words is "one hundred twenty-one trillion, two hundred eleven billion, two hundred million, two hundred one thousand, two hundred".