2011220 has 24 divisors (see below), whose sum is σ = 4251744. Its totient is φ = 799136.

The previous prime is 2011211. The next prime is 2011241. The reversal of 2011220 is 221102.

It is a junction number, because it is equal to n+sod(n) for n = 2011198 and 2011207.

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, 4319 + ... + 4761.

It is an arithmetic number, because the mean of its divisors is an integer number (177156).

2^2011220 is an apocalyptic number.

2011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011220 is an abundant number, since it is smaller than the sum of its proper divisors (2240524).

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

2011220 is a wasteful number, since it uses less digits than its factorization.

2011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679 (or 677 counting only the distinct ones).

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

The square root of 2011220 is about 1418.1748834329. The cubic root of 2011220 is about 126.2272710121.

Adding to 2011220 its reverse (221102), we get a palindrome (2232322).

The spelling of 2011220 in words is "two million, eleven thousand, two hundred twenty".