1211100112200 has 192 divisors, whose sum is σ = 4162864720320. Its totient is φ = 288786816000.

The previous prime is 1211100112169. The next prime is 1211100112259. The reversal of 1211100112200 is 22110011121.

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 (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1101499 + ... + 1906698.

It is an arithmetic number, because the mean of its divisors is an integer number (21681587085).

Almost surely, 2^{1211100112200} is an apocalyptic number.

1211100112200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211100112200 is an abundant number, since it is smaller than the sum of its proper divisors (2951764608120).

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

1211100112200 is a wasteful number, since it uses less digits than its factorization.

1211100112200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3008288 (or 3008279 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1211100112200 its reverse (22110011121), we get a palindrome (1233210123321).

The spelling of 1211100112200 in words is "one trillion, two hundred eleven billion, one hundred million, one hundred twelve thousand, two hundred".