1111330220 has 96 divisors (see below), whose sum is σ = 3133541376. Its totient is φ = 319737600.

The previous prime is 1111330219. The next prime is 1111330223. The reversal of 1111330220 is 220331111.

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 = 1111330195 and 1111330204.

It is not an unprimeable number, because it can be changed into a prime (1111330223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7736 + ... + 47775.

It is an arithmetic number, because the mean of its divisors is an integer number (32641056).

Almost surely, 2^1111330220 is an apocalyptic number.

1111330220 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 1111330220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1566770688).

1111330220 is an abundant number, since it is smaller than the sum of its proper divisors (2022211156).

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

1111330220 is a wasteful number, since it uses less digits than its factorization.

1111330220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55551 (or 55549 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1111330220 is about 33336.6198046533. The cubic root of 1111330220 is about 1035.8122464027.

Adding to 1111330220 its reverse (220331111), we get a palindrome (1331661331).

It can be divided in two parts, 111 and 1330220, that added together give a palindrome (1330331).

The spelling of 1111330220 in words is "one billion, one hundred eleven million, three hundred thirty thousand, two hundred twenty".