20112011221211 has 32 divisors (see below), whose sum is σ = 24914212084608. Its totient is φ = 15809537802240.

The previous prime is 20112011221187. The next prime is 20112011221223. The reversal of 20112011221211 is 11212211021102.

It is not a de Polignac number, because 20112011221211 - 2¹⁰ = 20112011220187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20112011221211.

It is not an unprimeable number, because it can be changed into a prime (20112011221241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12613055 + ... + 14117831.

It is an arithmetic number, because the mean of its divisors is an integer number (778569127644).

Almost surely, 2^{20112011221211} is an apocalyptic number.

20112011221211 is a deficient number, since it is larger than the sum of its proper divisors (4802200863397).

20112011221211 is a wasteful number, since it uses less digits than its factorization.

20112011221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505751.

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

Adding to 20112011221211 its reverse (11212211021102), we get a palindrome (31324222242313).

The spelling of 20112011221211 in words is "twenty trillion, one hundred twelve billion, eleven million, two hundred twenty-one thousand, two hundred eleven".