2221222201111 has 4 divisors (see below), whose sum is σ = 2221228139872. Its totient is φ = 2221216262352.

The previous prime is 2221222201097. The next prime is 2221222201123. The reversal of 2221222201111 is 1111022221222.

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 2221222201111 - 2¹⁹ = 2221221676823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221222201171) 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, 2367711 + ... + 3169936.

It is an arithmetic number, because the mean of its divisors is an integer number (555307034968).

Almost surely, 2^{2221222201111} is an apocalyptic number.

2221222201111 is a deficient number, since it is larger than the sum of its proper divisors (5938761).

2221222201111 is an equidigital number, since it uses as much as digits as its factorization.

2221222201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5938760.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2221222201111 its reverse (1111022221222), we get a palindrome (3332244422333).

The spelling of 2221222201111 in words is "two trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred one thousand, one hundred eleven".