2221111100207 has 2 divisors, whose sum is σ = 2221111100208. Its totient is φ = 2221111100206.

The previous prime is 2221111100191. The next prime is 2221111100267. The reversal of 2221111100207 is 7020011111222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221111100207 - 2⁴ = 2221111100191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221111100267) 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 as a sum of consecutive naturals, namely, 1110555550103 + 1110555550104.

It is an arithmetic number, because the mean of its divisors is an integer number (1110555550104).

Almost surely, 2^{2221111100207} is an apocalyptic number.

2221111100207 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221111100207 is an equidigital number, since it uses as much as digits as its factorization.

2221111100207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 2221111100207 its reverse (7020011111222), we get a palindrome (9241122211429).

The spelling of 2221111100207 in words is "two trillion, two hundred twenty-one billion, one hundred eleven million, one hundred thousand, two hundred seven".