1111220 has 24 divisors (see below), whose sum is σ = 2546208. Its totient is φ = 404000.

The previous prime is 1111219. The next prime is 1111247. The reversal of 1111220 is 221111.

It is a junction number, because it is equal to n+sod(n) for n = 1111198 and 1111207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2306 + ... + 2745.

It is an arithmetic number, because the mean of its divisors is an integer number (106092).

2^1111220 is an apocalyptic number.

1111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111220 is an abundant number, since it is smaller than the sum of its proper divisors (1434988).

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

1111220 is a wasteful number, since it uses less digits than its factorization.

1111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5071 (or 5069 counting only the distinct ones).

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

The square root of 1111220 is about 1054.1442026592. The cubic root of 1111220 is about 103.5778001856.

Adding to 1111220 its reverse (221111), we get a palindrome (1332331).

It can be divided in two parts, 1111 and 220, that added together give a palindrome (1331).

The spelling of 1111220 in words is "one million, one hundred eleven thousand, two hundred twenty".