22222202221111 has 2 divisors, whose sum is σ = 22222202221112. Its totient is φ = 22222202221110.

The previous prime is 22222202221103. The next prime is 22222202221127. The reversal of 22222202221111 is 11112220222222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22222202221111 - 2³ = 22222202221103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22222202221181) 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 as a sum of consecutive naturals, namely, 11111101110555 + 11111101110556.

It is an arithmetic number, because the mean of its divisors is an integer number (11111101110556).

Almost surely, 2^{22222202221111} is an apocalyptic number.

22222202221111 is a deficient number, since it is larger than the sum of its proper divisors (1).

22222202221111 is an equidigital number, since it uses as much as digits as its factorization.

22222202221111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 22222202221111 its reverse (11112220222222), we get a palindrome (33334422443333).

The spelling of 22222202221111 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred two million, two hundred twenty-one thousand, one hundred eleven".