22122146 has 4 divisors (see below), whose sum is σ = 33183222. Its totient is φ = 11061072.

The previous prime is 22122103. The next prime is 22122169. The reversal of 22122146 is 64122122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21576025 + 546121 = 4645^2 + 739^2 .

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 as a sum of consecutive naturals, namely, 5530535 + ... + 5530538.

Almost surely, 2^22122146 is an apocalyptic number.

22122146 is a deficient number, since it is larger than the sum of its proper divisors (11061076).

22122146 is a wasteful number, since it uses less digits than its factorization.

22122146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11061075.

The product of its digits is 384, while the sum is 20.

The square root of 22122146 is about 4703.4185439954. The cubic root of 22122146 is about 280.7215488640.

Adding to 22122146 its reverse (64122122), we get a palindrome (86244268).

The spelling of 22122146 in words is "twenty-two million, one hundred twenty-two thousand, one hundred forty-six".