1111200003220 has 96 divisors (see below), whose sum is σ = 2439564019200. Its totient is φ = 424736815104.

The previous prime is 1111200003217. The next prime is 1111200003227. The reversal of 1111200003220 is 223000021111.

It is a super-2 number, since 2×1111200003220² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1111200003220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111200003227) 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, 157189846 + ... + 157196914.

It is an arithmetic number, because the mean of its divisors is an integer number (25412125200).

Almost surely, 2^{1111200003220} is an apocalyptic number.

1111200003220 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 1111200003220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1219782009600).

1111200003220 is an abundant number, since it is smaller than the sum of its proper divisors (1328364015980).

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

1111200003220 is a wasteful number, since it uses less digits than its factorization.

1111200003220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11057 (or 11055 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1111200003220 its reverse (223000021111), we get a palindrome (1334200024331).

The spelling of 1111200003220 in words is "one trillion, one hundred eleven billion, two hundred million, three thousand, two hundred twenty".