1111211211200 has 84 divisors (see below), whose sum is σ = 2761346508792. Its totient is φ = 440083584000.

The previous prime is 1111211211199. The next prime is 1111211211241. The reversal of 1111211211200 is 21121121111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3276554 + ... + 3599753.

Almost surely, 2^{1111211211200} is an apocalyptic number.

1111211211200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111211211200 is an abundant number, since it is smaller than the sum of its proper divisors (1650135297592).

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

1111211211200 is a wasteful number, since it uses less digits than its factorization.

1111211211200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6876430 (or 6876415 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1111211211200 its reverse (21121121111), we get a palindrome (1132332332311).

It can be divided in two parts, 11 and 11211211200, that added together give a palindrome (11211211211).

The spelling of 1111211211200 in words is "one trillion, one hundred eleven billion, two hundred eleven million, two hundred eleven thousand, two hundred".