20111122220012 has 6 divisors (see below), whose sum is σ = 35194463885028. Its totient is φ = 10055561110004.

The previous prime is 20111122220011. The next prime is 20111122220023. The reversal of 20111122220012 is 21002222111102.

It is not an unprimeable number, because it can be changed into a prime (20111122220011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2513890277498 + ... + 2513890277505.

It is an arithmetic number, because the mean of its divisors is an integer number (5865743980838).

Almost surely, 2^{20111122220012} is an apocalyptic number.

It is an amenable number.

20111122220012 is a deficient number, since it is larger than the sum of its proper divisors (15083341665016).

20111122220012 is a wasteful number, since it uses less digits than its factorization.

20111122220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027780555007 (or 5027780555005 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20111122220012 its reverse (21002222111102), we get a palindrome (41113344331114).

The spelling of 20111122220012 in words is "twenty trillion, one hundred eleven billion, one hundred twenty-two million, two hundred twenty thousand, twelve".