2221420 has 24 divisors (see below), whose sum is σ = 4712400. Its totient is φ = 879552.

The previous prime is 2221411. The next prime is 2221433. The reversal of 2221420 is 241222.

2221420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2221420.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1671 + ... + 2689.

It is an arithmetic number, because the mean of its divisors is an integer number (196350).

2^2221420 is an apocalyptic number.

2221420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221420 is an abundant number, since it is smaller than the sum of its proper divisors (2490980).

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

2221420 is a wasteful number, since it uses less digits than its factorization.

2221420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137 (or 1135 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 2221420 is about 1490.4428871983. The cubic root of 2221420 is about 130.4798831799.

Adding to 2221420 its reverse (241222), we get a palindrome (2462642).

The spelling of 2221420 in words is "two million, two hundred twenty-one thousand, four hundred twenty".