20112212211 has 64 divisors (see below), whose sum is σ = 35066035200. Its totient is φ = 9965846016.

The previous prime is 20112212203. The next prime is 20112212251. The reversal of 20112212211 is 11221221102.

It is not a de Polignac number, because 20112212211 - 2³ = 20112212203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20112212251) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 258600 + ... + 327258.

It is an arithmetic number, because the mean of its divisors is an integer number (547906800).

Almost surely, 2^20112212211 is an apocalyptic number.

20112212211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20112212211 is a deficient number, since it is larger than the sum of its proper divisors (14953822989).

20112212211 is a wasteful number, since it uses less digits than its factorization.

20112212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68748.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20112212211 its reverse (11221221102), we get a palindrome (31333433313).

The spelling of 20112212211 in words is "twenty billion, one hundred twelve million, two hundred twelve thousand, two hundred eleven".