1211224210200 has 72 divisors (see below), whose sum is σ = 4067694645300. Its totient is φ = 322993122240.

The previous prime is 1211224210151. The next prime is 1211224210241. The reversal of 1211224210200 is 20124221121.

1211224210200 is a `hidden beast` number, since 1 + 21 + 1 + 22 + 421 + 0 + 200 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×1211224210200² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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 17 ways as a sum of consecutive naturals, for example, 336449370 + ... + 336452969.

Almost surely, 2^{1211224210200} is an apocalyptic number.

1211224210200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211224210200 is an abundant number, since it is smaller than the sum of its proper divisors (2856470435100).

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

1211224210200 is a wasteful number, since it uses less digits than its factorization.

1211224210200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672902361 (or 672902349 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1211224210200 its reverse (20124221121), we get a palindrome (1231348431321).

The spelling of 1211224210200 in words is "one trillion, two hundred eleven billion, two hundred twenty-four million, two hundred ten thousand, two hundred".