22221914 has 16 divisors (see below), whose sum is σ = 39160800. Its totient is φ = 9323760.

The previous prime is 22221911. The next prime is 22221949. The reversal of 22221914 is 41912222.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22221914.

It is not an unprimeable number, because it can be changed into a prime (22221911) by changing a digit.

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, 38564 + ... + 39135.

It is an arithmetic number, because the mean of its divisors is an integer number (2447550).

Almost surely, 2^22221914 is an apocalyptic number.

22221914 is a deficient number, since it is larger than the sum of its proper divisors (16938886).

22221914 is a wasteful number, since it uses less digits than its factorization.

22221914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77725.

The product of its digits is 576, while the sum is 23.

The square root of 22221914 is about 4714.0125158934. The cubic root of 22221914 is about 281.1429219378.

The spelling of 22221914 in words is "twenty-two million, two hundred twenty-one thousand, nine hundred fourteen".