22420122442 has 4 divisors (see below), whose sum is σ = 33630183666. Its totient is φ = 11210061220.

The previous prime is 22420122421. The next prime is 22420122443. The reversal of 22420122442 is 24422102422.

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., 20960958841 + 1459163601 = 144779^2 + 38199^2 .

It is not an unprimeable number, because it can be changed into a prime (22420122443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605030609 + ... + 5605030612.

Almost surely, 2^22420122442 is an apocalyptic number.

22420122442 is a deficient number, since it is larger than the sum of its proper divisors (11210061224).

22420122442 is a wasteful number, since it uses less digits than its factorization.

22420122442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11210061223.

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 22420122442 its reverse (24422102422), we get a palindrome (46842224864).

The spelling of 22420122442 in words is "twenty-two billion, four hundred twenty million, one hundred twenty-two thousand, four hundred forty-two".