1111213200 has 120 divisors (see below), whose sum is σ = 3573505408. Its totient is φ = 295165440.

The previous prime is 1111213189. The next prime is 1111213223. The reversal of 1111213200 is 23121111.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 330729 + ... + 334071.

Almost surely, 2^1111213200 is an apocalyptic number.

1111213200 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 1111213200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1786752704).

1111213200 is an abundant number, since it is smaller than the sum of its proper divisors (2462292208).

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

1111213200 is a wasteful number, since it uses less digits than its factorization.

1111213200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3641 (or 3630 counting only the distinct ones).

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

The square root of 1111213200 is about 33334.8646314936. The cubic root of 1111213200 is about 1035.7758890712.

Adding to 1111213200 its reverse (23121111), we get a palindrome (1134334311).

The spelling of 1111213200 in words is "one billion, one hundred eleven million, two hundred thirteen thousand, two hundred".