2012220 has 72 divisors (see below), whose sum is σ = 6980064. Its totient is φ = 459648.

The previous prime is 2012203. The next prime is 2012221. The reversal of 2012220 is 222102.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 462 + ... + 2058.

2^2012220 is an apocalyptic number.

2012220 is a gapful number since it is divisible by the number (20) 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 2012220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3490032).

2012220 is an abundant number, since it is smaller than the sum of its proper divisors (4967844).

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

2012220 is a wasteful number, since it uses less digits than its factorization.

2012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619 (or 1614 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2012220 is about 1418.5274054455. The cubic root of 2012220 is about 126.2481880601.

Adding to 2012220 its reverse (222102), we get a palindrome (2234322).

The spelling of 2012220 in words is "two million, twelve thousand, two hundred twenty".