20002211220111 has 4 divisors (see below), whose sum is σ = 26669614960152. Its totient is φ = 13334807480072.

The previous prime is 20002211220091. The next prime is 20002211220151. The reversal of 20002211220111 is 11102211220002.

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 20002211220111 - 2¹³ = 20002211211919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002211220151) 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 3 ways as a sum of consecutive naturals, for example, 3333701870016 + ... + 3333701870021.

It is an arithmetic number, because the mean of its divisors is an integer number (6667403740038).

Almost surely, 2^{20002211220111} is an apocalyptic number.

20002211220111 is a deficient number, since it is larger than the sum of its proper divisors (6667403740041).

20002211220111 is an equidigital number, since it uses as much as digits as its factorization.

20002211220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6667403740040.

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

Adding to 20002211220111 its reverse (11102211220002), we get a palindrome (31104422440113).

The spelling of 20002211220111 in words is "twenty trillion, two billion, two hundred eleven million, two hundred twenty thousand, one hundred eleven".