1111211200 has 168 divisors, whose sum is σ = 3140781120. Its totient is φ = 382694400.

The previous prime is 1111211173. The next prime is 1111211207. The reversal of 1111211200 is 21121111.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (1111211207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 332739 + ... + 336061.

Almost surely, 2^1111211200 is an apocalyptic number.

1111211200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111211200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1570390560).

1111211200 is an abundant number, since it is smaller than the sum of its proper divisors (2029569920).

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

1111211200 is a wasteful number, since it uses less digits than its factorization.

1111211200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3375 (or 3360 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1111211200 is about 33334.8346328582. The cubic root of 1111211200 is about 1035.7752676624.

Adding to 1111211200 its reverse (21121111), we get a palindrome (1132332311).

It can be divided in two parts, 11 and 11211200, that added together give a palindrome (11211211).

The spelling of 1111211200 in words is "one billion, one hundred eleven million, two hundred eleven thousand, two hundred".