20222144442 has 12 divisors (see below), whose sum is σ = 43814646330. Its totient is φ = 6740714808.

The previous prime is 20222144431. The next prime is 20222144443. The reversal of 20222144442 is 24444122202.

20222144442 is a `hidden beast` number, since 2 + 0 + 2 + 2 + 214 + 4 + 442 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20175645681 + 46498761 = 142041^2 + 6819^2 .

It is a super-2 number, since 2×20222144442² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20222144443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 561726217 + ... + 561726252.

Almost surely, 2^20222144442 is an apocalyptic number.

20222144442 is an abundant number, since it is smaller than the sum of its proper divisors (23592501888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20222144442 is a wasteful number, since it uses less digits than its factorization.

20222144442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123452477 (or 1123452474 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 20222144442 its reverse (24444122202), we get a palindrome (44666266644).

The spelling of 20222144442 in words is "twenty billion, two hundred twenty-two million, one hundred forty-four thousand, four hundred forty-two".