22122142 has 16 divisors (see below), whose sum is σ = 37988352. Its totient is φ = 9464760.

The previous prime is 22122103. The next prime is 22122169. The reversal of 22122142 is 24122122.

It is a plaindrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11167 + ... + 12997.

It is an arithmetic number, because the mean of its divisors is an integer number (2374272).

Almost surely, 2^22122142 is an apocalyptic number.

22122142 is a deficient number, since it is larger than the sum of its proper divisors (15866210).

22122142 is a wasteful number, since it uses less digits than its factorization.

22122142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2703.

The product of its digits is 128, while the sum is 16.

The square root of 22122142 is about 4703.4181187728. The cubic root of 22122142 is about 280.7215319445.

Adding to 22122142 its reverse (24122122), we get a palindrome (46244264).

The spelling of 22122142 in words is "twenty-two million, one hundred twenty-two thousand, one hundred forty-two".