1111204220 has 48 divisors (see below), whose sum is σ = 2668790208. Its totient is φ = 380712960.

The previous prime is 1111204219. The next prime is 1111204247. The reversal of 1111204220 is 224021111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1111204195 and 1111204204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361490 + ... + 364550.

It is an arithmetic number, because the mean of its divisors is an integer number (55599796).

Almost surely, 2^1111204220 is an apocalyptic number.

1111204220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111204220 is an abundant number, since it is smaller than the sum of its proper divisors (1557585988).

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

1111204220 is a wasteful number, since it uses less digits than its factorization.

1111204220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5670 (or 5668 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1111204220 is about 33334.7299374091. The cubic root of 1111204220 is about 1035.7730989398.

Adding to 1111204220 its reverse (224021111), we get a palindrome (1335225331).

The spelling of 1111204220 in words is "one billion, one hundred eleven million, two hundred four thousand, two hundred twenty".