22012144442 has 16 divisors (see below), whose sum is σ = 36800490240. Its totient is φ = 9813463488.

The previous prime is 22012144439. The next prime is 22012144463. The reversal of 22012144442 is 24444121022.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17036618 + ... + 17037909.

It is an arithmetic number, because the mean of its divisors is an integer number (2300030640).

Almost surely, 2^22012144442 is an apocalyptic number.

22012144442 is a deficient number, since it is larger than the sum of its proper divisors (14788345798).

22012144442 is a wasteful number, since it uses less digits than its factorization.

22012144442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34074565.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 22012144442 its reverse (24444121022), we get a palindrome (46456265464).

The spelling of 22012144442 in words is "twenty-two billion, twelve million, one hundred forty-four thousand, four hundred forty-two".