20222244442 has 8 divisors (see below), whose sum is σ = 30633697332. Its totient is φ = 10011012000.

The previous prime is 20222244433. The next prime is 20222244443. The reversal of 20222244442 is 24444222202.

It can be written as a sum of positive squares in 2 ways, for example, as 18151903441 + 2070341001 = 134729^2 + 45501^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20222244442.

It is not an unprimeable number, because it can be changed into a prime (20222244443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50054859 + ... + 50055262.

Almost surely, 2^20222244442 is an apocalyptic number.

20222244442 is a deficient number, since it is larger than the sum of its proper divisors (10411452890).

20222244442 is a wasteful number, since it uses less digits than its factorization.

20222244442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100110224.

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 20222244442 its reverse (24444222202), we get a palindrome (44666466644).

The spelling of 20222244442 in words is "twenty billion, two hundred twenty-two million, two hundred forty-four thousand, four hundred forty-two".