102221212202111 has 2 divisors, whose sum is σ = 102221212202112. Its totient is φ = 102221212202110.

The previous prime is 102221212202101. The next prime is 102221212202129. The reversal of 102221212202111 is 111202212122201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102221212202111 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102221212202101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110606101055 + 51110606101056.

It is an arithmetic number, because the mean of its divisors is an integer number (51110606101056).

Almost surely, 2^{102221212202111} is an apocalyptic number.

102221212202111 is a deficient number, since it is larger than the sum of its proper divisors (1).

102221212202111 is an equidigital number, since it uses as much as digits as its factorization.

102221212202111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 102221212202111 its reverse (111202212122201), we get a palindrome (213423424324312).

The spelling of 102221212202111 in words is "one hundred two trillion, two hundred twenty-one billion, two hundred twelve million, two hundred two thousand, one hundred eleven".