2221374 has 16 divisors (see below), whose sum is σ = 4458240. Its totient is φ = 737880.

The previous prime is 2221343. The next prime is 2221379. The reversal of 2221374 is 4731222.

It is a self number, because there is not a number n which added to its sum of digits gives 2221374.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221379) 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, 2157 + ... + 3015.

It is an arithmetic number, because the mean of its divisors is an integer number (278640).

2^2221374 is an apocalyptic number.

2221374 is an abundant number, since it is smaller than the sum of its proper divisors (2236866).

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

2221374 is a wasteful number, since it uses less digits than its factorization.

2221374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295.

The product of its digits is 672, while the sum is 21.

The square root of 2221374 is about 1490.4274554637. The cubic root of 2221374 is about 130.4789825374.

Adding to 2221374 its reverse (4731222), we get a palindrome (6952596).

It can be divided in two parts, 222 and 1374, that added together give a triangular number (1596 = T₅₆).

The spelling of 2221374 in words is "two million, two hundred twenty-one thousand, three hundred seventy-four".