2221202011111 has 2 divisors, whose sum is σ = 2221202011112. Its totient is φ = 2221202011110.

The previous prime is 2221202011099. The next prime is 2221202011117. The reversal of 2221202011111 is 1111102021222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221202011111 - 2⁷ = 2221202010983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221202011117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110601005555 + 1110601005556.

It is an arithmetic number, because the mean of its divisors is an integer number (1110601005556).

Almost surely, 2^{2221202011111} is an apocalyptic number.

2221202011111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221202011111 is an equidigital number, since it uses as much as digits as its factorization.

2221202011111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2221202011111 its reverse (1111102021222), we get a palindrome (3332304032333).

The spelling of 2221202011111 in words is "two trillion, two hundred twenty-one billion, two hundred two million, eleven thousand, one hundred eleven".