22212122 has 8 divisors (see below), whose sum is σ = 33648372. Its totient is φ = 10996000.

The previous prime is 22212109. The next prime is 22212131. The reversal of 22212122 is 22121222.

It can be written as a sum of positive squares in 2 ways, for example, as 14600041 + 7612081 = 3821^2 + 2759^2 .

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 22212097 and 22212106.

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 3 ways as a sum of consecutive naturals, for example, 54779 + ... + 55182.

Almost surely, 2^22212122 is an apocalyptic number.

22212122 is a deficient number, since it is larger than the sum of its proper divisors (11436250).

22212122 is a wasteful number, since it uses less digits than its factorization.

22212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110064.

The product of its digits is 64, while the sum is 14.

The square root of 22212122 is about 4712.9737958109. The cubic root of 22212122 is about 281.1016210257.

Adding to 22212122 its reverse (22121222), we get a palindrome (44333344).

It can be divided in two parts, 2 and 2212122, that multiplied together give a palindrome (4424244).

The spelling of 22212122 in words is "twenty-two million, two hundred twelve thousand, one hundred twenty-two".