202221212222111 has 2 divisors, whose sum is σ = 202221212222112. Its totient is φ = 202221212222110.

The previous prime is 202221212222101. The next prime is 202221212222171. The reversal of 202221212222111 is 111222212122202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202221212222111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202221212222101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101110606111055 + 101110606111056.

It is an arithmetic number, because the mean of its divisors is an integer number (101110606111056).

Almost surely, 2^{202221212222111} is an apocalyptic number.

202221212222111 is a deficient number, since it is larger than the sum of its proper divisors (1).

202221212222111 is an equidigital number, since it uses as much as digits as its factorization.

202221212222111 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 23.

Adding to 202221212222111 its reverse (111222212122202), we get a palindrome (313443424344313).

Subtracting from 202221212222111 its reverse (111222212122202), we obtain a palindrome (90999000099909).

The spelling of 202221212222111 in words is "two hundred two trillion, two hundred twenty-one billion, two hundred twelve million, two hundred twenty-two thousand, one hundred eleven".