102211021211111 has 2 divisors, whose sum is σ = 102211021211112. Its totient is φ = 102211021211110.

The previous prime is 102211021211087. The next prime is 102211021211237. The reversal of 102211021211111 is 111112120112201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102211021211111 - 2³⁴ = 102193841341927 is a prime.

It is a super-3 number, since 3×102211021211111³ (a number of 43 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102211021211111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102211021511111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51105510605555 + 51105510605556.

It is an arithmetic number, because the mean of its divisors is an integer number (51105510605556).

Almost surely, 2^{102211021211111} is an apocalyptic number.

102211021211111 is a deficient number, since it is larger than the sum of its proper divisors (1).

102211021211111 is an equidigital number, since it uses as much as digits as its factorization.

102211021211111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 102211021211111 its reverse (111112120112201), we get a palindrome (213323141323312).

The spelling of 102211021211111 in words is "one hundred two trillion, two hundred eleven billion, twenty-one million, two hundred eleven thousand, one hundred eleven".