22151422 has 8 divisors (see below), whose sum is σ = 34299072. Its totient is φ = 10718400.

The previous prime is 22151417. The next prime is 22151431. The reversal of 22151422 is 22415122.

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 22151422.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 178579 + ... + 178702.

It is an arithmetic number, because the mean of its divisors is an integer number (4287384).

Almost surely, 2^22151422 is an apocalyptic number.

22151422 is a deficient number, since it is larger than the sum of its proper divisors (12147650).

22151422 is a wasteful number, since it uses less digits than its factorization.

22151422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357314.

The product of its digits is 320, while the sum is 19.

The square root of 22151422 is about 4706.5297194430. The cubic root of 22151422 is about 280.8453280153.

Adding to 22151422 its reverse (22415122), we get a palindrome (44566544).

The spelling of 22151422 in words is "twenty-two million, one hundred fifty-one thousand, four hundred twenty-two".