6212220 has 72 divisors (see below), whose sum is σ = 20243664. Its totient is φ = 1419264.

The previous prime is 6212203. The next prime is 6212243. The reversal of 6212220 is 222126.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 6212220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1884 + ... + 3996.

It is an arithmetic number, because the mean of its divisors is an integer number (281162).

Almost surely, 2^6212220 is an apocalyptic number.

6212220 is a gapful number since it is divisible by the number (60) 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 6212220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10121832).

6212220 is an abundant number, since it is smaller than the sum of its proper divisors (14031444).

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

6212220 is a wasteful number, since it uses less digits than its factorization.

6212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139 (or 2130 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 6212220 is about 2492.4325467302. The cubic root of 6212220 is about 183.8296706667.

Adding to 6212220 its reverse (222126), we get a palindrome (6434346).

It can be divided in two parts, 6 and 212220, that added together give a triangular number (212226 = T₆₅₁).

The spelling of 6212220 in words is "six million, two hundred twelve thousand, two hundred twenty".