20112211212011 has 16 divisors (see below), whose sum is σ = 20213598384000. Its totient is φ = 20011159577280.

The previous prime is 20112211211929. The next prime is 20112211212031. The reversal of 20112211212011 is 11021211221102.

It is a cyclic number.

It is not a de Polignac number, because 20112211212011 - 2⁴² = 15714164700907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112211212031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222861680 + ... + 222951906.

It is an arithmetic number, because the mean of its divisors is an integer number (1263349899000).

Almost surely, 2^{20112211212011} is an apocalyptic number.

20112211212011 is a deficient number, since it is larger than the sum of its proper divisors (101387171989).

20112211212011 is an equidigital number, since it uses as much as digits as its factorization.

20112211212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92074.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 20112211212011 its reverse (11021211221102), we get a palindrome (31133422433113).

Subtracting from 20112211212011 its reverse (11021211221102), we obtain a palindrome (9090999990909).

The spelling of 20112211212011 in words is "twenty trillion, one hundred twelve billion, two hundred eleven million, two hundred twelve thousand, eleven".