1211210133200 has 30 divisors (see below), whose sum is σ = 2909932345974. Its totient is φ = 484484053120.

The previous prime is 1211210133179. The next prime is 1211210133223. The reversal of 1211210133200 is 23310121121.

It can be written as a sum of positive squares in 3 ways, for example, as 92540073616 + 1118670059584 = 304204^2 + 1057672^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1514012267 + ... + 1514013066.

Almost surely, 2^{1211210133200} is an apocalyptic number.

1211210133200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211210133200 is an abundant number, since it is smaller than the sum of its proper divisors (1698722212774).

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

1211210133200 is a wasteful number, since it uses less digits than its factorization.

1211210133200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3028025351 (or 3028025340 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1211210133200 its reverse (23310121121), we get a palindrome (1234520254321).

The spelling of 1211210133200 in words is "one trillion, two hundred eleven billion, two hundred ten million, one hundred thirty-three thousand, two hundred".