22113420442 has 4 divisors (see below), whose sum is σ = 33170130666. Its totient is φ = 11056710220.

The previous prime is 22113420401. The next prime is 22113420451. The reversal of 22113420442 is 24402431122.

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., 14532061401 + 7581359041 = 120549^2 + 87071^2 .

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, 5528355109 + ... + 5528355112.

Almost surely, 2^22113420442 is an apocalyptic number.

22113420442 is a deficient number, since it is larger than the sum of its proper divisors (11056710224).

22113420442 is a wasteful number, since it uses less digits than its factorization.

22113420442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11056710223.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 22113420442 its reverse (24402431122), we get a palindrome (46515851564).

The spelling of 22113420442 in words is "twenty-two billion, one hundred thirteen million, four hundred twenty thousand, four hundred forty-two".