22171042 has 16 divisors (see below), whose sum is σ = 33776352. Its totient is φ = 10913760.

The previous prime is 22171033. The next prime is 22171063. The reversal of 22171042 is 24017122.

It is a happy number.

It is an unprimeable number.

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, 66817 + ... + 67147.

It is an arithmetic number, because the mean of its divisors is an integer number (2111022).

Almost surely, 2^22171042 is an apocalyptic number.

22171042 is a deficient number, since it is larger than the sum of its proper divisors (11605310).

22171042 is a wasteful number, since it uses less digits than its factorization.

22171042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 22171042 is about 4708.6135963784. The cubic root of 22171042 is about 280.9282205012.

Adding to 22171042 its reverse (24017122), we get a palindrome (46188164).

The spelling of 22171042 in words is "twenty-two million, one hundred seventy-one thousand, forty-two".