22111442 has 8 divisors (see below), whose sum is σ = 33217776. Its totient is φ = 11038852.

The previous prime is 22111433. The next prime is 22111447. The reversal of 22111442 is 24411122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22111442.

It is not an unprimeable number, because it can be changed into a prime (22111447) 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 3 ways as a sum of consecutive naturals, for example, 6728 + ... + 9459.

It is an arithmetic number, because the mean of its divisors is an integer number (4152222).

Almost surely, 2^22111442 is an apocalyptic number.

22111442 is a deficient number, since it is larger than the sum of its proper divisors (11106334).

22111442 is a wasteful number, since it uses less digits than its factorization.

22111442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16872.

The product of its digits is 128, while the sum is 17.

The square root of 22111442 is about 4702.2805105608. The cubic root of 22111442 is about 280.6762650079.

Adding to 22111442 its reverse (24411122), we get a palindrome (46522564).

The spelling of 22111442 in words is "twenty-two million, one hundred eleven thousand, four hundred forty-two".