1212212201200 has 240 divisors, whose sum is σ = 3910275726336. Its totient is φ = 348768230400.

The previous prime is 1212212201171. The next prime is 1212212201203. The reversal of 1212212201200 is 21022122121.

It is a happy number.

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 (1212212201203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1113352 + ... + 1914151.

Almost surely, 2^{1212212201200} is an apocalyptic number.

1212212201200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212212201200 is an abundant number, since it is smaller than the sum of its proper divisors (2698063525136).

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

1212212201200 is a wasteful number, since it uses less digits than its factorization.

1212212201200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3027552 (or 3027541 counting only the distinct ones).

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

Adding to 1212212201200 its reverse (21022122121), we get a palindrome (1233234323321).

The spelling of 1212212201200 in words is "one trillion, two hundred twelve billion, two hundred twelve million, two hundred one thousand, two hundred".