22211240242 has 4 divisors (see below), whose sum is σ = 33316860366. Its totient is φ = 11105620120.

The previous prime is 22211240221. The next prime is 22211240257. The reversal of 22211240242 is 24204211222.

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., 14402160081 + 7809080161 = 120009^2 + 88369^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5552810059 + ... + 5552810062.

Almost surely, 2^22211240242 is an apocalyptic number.

22211240242 is a deficient number, since it is larger than the sum of its proper divisors (11105620124).

22211240242 is a wasteful number, since it uses less digits than its factorization.

22211240242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11105620123.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 22211240242 its reverse (24204211222), we get a palindrome (46415451464).

The spelling of 22211240242 in words is "twenty-two billion, two hundred eleven million, two hundred forty thousand, two hundred forty-two".