1111211021200 has 120 divisors (see below), whose sum is σ = 3068114431680. Its totient is φ = 378858048000.

The previous prime is 1111211021183. The next prime is 1111211021201. The reversal of 1111211021200 is 21201121111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1111211021201) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 607351 + ... + 1609750.

It is an arithmetic number, because the mean of its divisors is an integer number (25567620264).

Almost surely, 2^{1111211021200} is an apocalyptic number.

1111211021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111211021200 is an abundant number, since it is smaller than the sum of its proper divisors (1956903410480).

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

1111211021200 is a wasteful number, since it uses less digits than its factorization.

1111211021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2217305 (or 2217294 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1111211021200 its reverse (21201121111), we get a palindrome (1132412142311).

The spelling of 1111211021200 in words is "one trillion, one hundred eleven billion, two hundred eleven million, twenty-one thousand, two hundred".