2001222210111 has 4 divisors (see below), whose sum is σ = 2668296280152. Its totient is φ = 1334148140072.

The previous prime is 2001222210109. The next prime is 2001222210131. The reversal of 2001222210111 is 1110122221002.

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 2001222210111 - 2¹ = 2001222210109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001222210131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333537035016 + ... + 333537035021.

It is an arithmetic number, because the mean of its divisors is an integer number (667074070038).

Almost surely, 2^{2001222210111} is an apocalyptic number.

2001222210111 is a deficient number, since it is larger than the sum of its proper divisors (667074070041).

2001222210111 is an equidigital number, since it uses as much as digits as its factorization.

2001222210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667074070040.

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

Adding to 2001222210111 its reverse (1110122221002), we get a palindrome (3111344431113).

The spelling of 2001222210111 in words is "two trillion, one billion, two hundred twenty-two million, two hundred ten thousand, one hundred eleven".