1212001201200 has 480 divisors, whose sum is σ = 4153610151936. Its totient is φ = 301388820480.

The previous prime is 1212001201183. The next prime is 1212001201237. The reversal of 1212001201200 is 21021002121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 359322714 + ... + 359326086.

Almost surely, 2^{1212001201200} is an apocalyptic number.

1212001201200 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 1212001201200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2076805075968).

1212001201200 is an abundant number, since it is smaller than the sum of its proper divisors (2941608950736).

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

1212001201200 is a wasteful number, since it uses less digits than its factorization.

1212001201200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3741 (or 3730 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1212001201200 its reverse (21021002121), we get a palindrome (1233022203321).

The spelling of 1212001201200 in words is "one trillion, two hundred twelve billion, one million, two hundred one thousand, two hundred".