22011220012 has 6 divisors (see below), whose sum is σ = 38519635028. Its totient is φ = 11005610004.

The previous prime is 22011220009. The next prime is 22011220013. The reversal of 22011220012 is 21002211022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22011219974 and 22011220001.

It is not an unprimeable number, because it can be changed into a prime (22011220013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2751402498 + ... + 2751402505.

Almost surely, 2^22011220012 is an apocalyptic number.

It is an amenable number.

22011220012 is a deficient number, since it is larger than the sum of its proper divisors (16508415016).

22011220012 is a wasteful number, since it uses less digits than its factorization.

22011220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5502805007 (or 5502805005 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22011220012 its reverse (21002211022), we get a palindrome (43013431034).

The spelling of 22011220012 in words is "twenty-two billion, eleven million, two hundred twenty thousand, twelve".