2221047 has 8 divisors (see below), whose sum is σ = 3290480. Its totient is φ = 1480680.

The previous prime is 2221031. The next prime is 2221061. The reversal of 2221047 is 7401222.

It is not a de Polignac number, because 2221047 - 2⁴ = 2221031 is a prime.

It is a Duffinian number.

2221047 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41104 + ... + 41157.

It is an arithmetic number, because the mean of its divisors is an integer number (411310).

2^2221047 is an apocalyptic number.

2221047 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2221047 is a deficient number, since it is larger than the sum of its proper divisors (1069433).

2221047 is an equidigital number, since it uses as much as digits as its factorization.

2221047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82270 (or 82264 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 2221047 is about 1490.3177513537. The cubic root of 2221047 is about 130.4725797853.

Adding to 2221047 its reverse (7401222), we get a palindrome (9622269).

It can be divided in two parts, 222104 and 7, that added together give a triangular number (222111 = T₆₆₆).

The spelling of 2221047 in words is "two million, two hundred twenty-one thousand, forty-seven".