121220201201200 has 120 divisors (see below), whose sum is σ = 298344417297696. Its totient is φ = 47303910144000.

The previous prime is 121220201201191. The next prime is 121220201201221. The reversal of 121220201201200 is 2102102022121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 595923510 + ... + 596126890.

Almost surely, 2^{121220201201200} is an apocalyptic number.

121220201201200 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 121220201201200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149172208648848).

121220201201200 is an abundant number, since it is smaller than the sum of its proper divisors (177124216096496).

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

121220201201200 is a wasteful number, since it uses less digits than its factorization.

121220201201200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239783 (or 239772 counting only the distinct ones).

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

Adding to 121220201201200 its reverse (2102102022121), we get a palindrome (123322303223321).

The spelling of 121220201201200 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred one million, two hundred one thousand, two hundred".