20110011122211 has 4 divisors (see below), whose sum is σ = 26813348162952. Its totient is φ = 13406674081472.

The previous prime is 20110011122161. The next prime is 20110011122233. The reversal of 20110011122211 is 11222111001102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20110011122211 - 2¹⁷ = 20110010991139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20110011122011) 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, 3351668520366 + ... + 3351668520371.

It is an arithmetic number, because the mean of its divisors is an integer number (6703337040738).

Almost surely, 2^{20110011122211} is an apocalyptic number.

20110011122211 is a deficient number, since it is larger than the sum of its proper divisors (6703337040741).

20110011122211 is an equidigital number, since it uses as much as digits as its factorization.

20110011122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6703337040740.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20110011122211 its reverse (11222111001102), we get a palindrome (31332122123313).

The spelling of 20110011122211 in words is "twenty trillion, one hundred ten billion, eleven million, one hundred twenty-two thousand, two hundred eleven".