20122212211212 has 96 divisors (see below), whose sum is σ = 51553018363392. Its totient is φ = 6082599730176.

The previous prime is 20122212211201. The next prime is 20122212211219. The reversal of 20122212211212 is 21211221222102.

It is not an unprimeable number, because it can be changed into a prime (20122212211219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12163818 + ... + 13718705.

It is an arithmetic number, because the mean of its divisors is an integer number (537010607952).

Almost surely, 2^{20122212211212} is an apocalyptic number.

It is an amenable number.

20122212211212 is an abundant number, since it is smaller than the sum of its proper divisors (31430806152180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20122212211212 is a wasteful number, since it uses less digits than its factorization.

20122212211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25882687 (or 25882685 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 20122212211212 its reverse (21211221222102), we get a palindrome (41333433433314).

The spelling of 20122212211212 in words is "twenty trillion, one hundred twenty-two billion, two hundred twelve million, two hundred eleven thousand, two hundred twelve".