121210112201200 has 120 divisors (see below), whose sum is σ = 317868348154896. Its totient is φ = 44050367232000.

The previous prime is 121210112201197. The next prime is 121210112201201. The reversal of 121210112201200 is 2102211012121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210112201201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 686581 + ... + 15584980.

Almost surely, 2^{121210112201200} is an apocalyptic number.

121210112201200 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 121210112201200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158934174077448).

121210112201200 is an abundant number, since it is smaller than the sum of its proper divisors (196658235953696).

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

121210112201200 is a wasteful number, since it uses less digits than its factorization.

121210112201200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16273283 (or 16273272 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121210112201200 its reverse (2102211012121), we get a palindrome (123312323213321).

The spelling of 121210112201200 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred twelve million, two hundred one thousand, two hundred".