1110001220 has 48 divisors (see below), whose sum is σ = 2404080000. Its totient is φ = 430295040.

The previous prime is 1110001219. The next prime is 1110001237. The reversal of 1110001220 is 221000111.

It is a junction number, because it is equal to n+sod(n) for n = 1110001198 and 1110001207.

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, 77156 + ... + 90404.

It is an arithmetic number, because the mean of its divisors is an integer number (50085000).

Almost surely, 2^1110001220 is an apocalyptic number.

1110001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1110001220 is an abundant number, since it is smaller than the sum of its proper divisors (1294078780).

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

1110001220 is a wasteful number, since it uses less digits than its factorization.

1110001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13388 (or 13386 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1110001220 is about 33316.6808070672. The cubic root of 1110001220 is about 1035.3991847836.

Adding to 1110001220 its reverse (221000111), we get a palindrome (1331001331).

The spelling of 1110001220 in words is "one billion, one hundred ten million, one thousand, two hundred twenty".