22005122 has 4 divisors (see below), whose sum is σ = 33007686. Its totient is φ = 11002560.

The previous prime is 22005107. The next prime is 22005127. The reversal of 22005122 is 22150022.

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., 21631801 + 373321 = 4651^2 + 611^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22005097 and 22005106.

It is not an unprimeable number, because it can be changed into a prime (22005127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5501279 + ... + 5501282.

Almost surely, 2^22005122 is an apocalyptic number.

22005122 is a deficient number, since it is larger than the sum of its proper divisors (11002564).

22005122 is a wasteful number, since it uses less digits than its factorization.

22005122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11002563.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 22005122 is about 4690.9617350816. The cubic root of 22005122 is about 280.2256769016.

Adding to 22005122 its reverse (22150022), we get a palindrome (44155144).

The spelling of 22005122 in words is "twenty-two million, five thousand, one hundred twenty-two".