20122211222012 has 12 divisors (see below), whose sum is σ = 35213921163456. Its totient is φ = 10061090889600.

The previous prime is 20122211222011. The next prime is 20122211222023. The reversal of 20122211222012 is 21022211222102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122211222011) 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 in 3 ways as a sum of consecutive naturals, for example, 249548 + ... + 6348755.

It is an arithmetic number, because the mean of its divisors is an integer number (2934493430288).

Almost surely, 2^{20122211222012} is an apocalyptic number.

It is an amenable number.

20122211222012 is a deficient number, since it is larger than the sum of its proper divisors (15091709941444).

20122211222012 is a wasteful number, since it uses less digits than its factorization.

20122211222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7360708 (or 7360706 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20122211222012 its reverse (21022211222102), we get a palindrome (41144422444114).

The spelling of 20122211222012 in words is "twenty trillion, one hundred twenty-two billion, two hundred eleven million, two hundred twenty-two thousand, twelve".