22111438 has 4 divisors (see below), whose sum is σ = 33167160. Its totient is φ = 11055718.

The previous prime is 22111433. The next prime is 22111447. The reversal of 22111438 is 83411122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83411122 = 2 ⋅41705561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5527858 + ... + 5527861.

It is an arithmetic number, because the mean of its divisors is an integer number (8291790).

Almost surely, 2^22111438 is an apocalyptic number.

22111438 is a deficient number, since it is larger than the sum of its proper divisors (11055722).

22111438 is a wasteful number, since it uses less digits than its factorization.

22111438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11055721.

The product of its digits is 384, while the sum is 22.

The square root of 22111438 is about 4702.2800852352. The cubic root of 22111438 is about 280.6762480829.

The spelling of 22111438 in words is "twenty-two million, one hundred eleven thousand, four hundred thirty-eight".