102221121211111 has 12 divisors (see below), whose sum is σ = 123010638475320. Its totient is φ = 84596789966640.

The previous prime is 102221121211091. The next prime is 102221121211117. The reversal of 102221121211111 is 111112121122201.

It is a de Polignac number, because none of the positive numbers 2^k-102221121211111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102221121211117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35968021525 + ... + 35968024366.

It is an arithmetic number, because the mean of its divisors is an integer number (10250886539610).

Almost surely, 2^{102221121211111} is an apocalyptic number.

102221121211111 is a deficient number, since it is larger than the sum of its proper divisors (20789517264209).

102221121211111 is an equidigital number, since it uses as much as digits as its factorization.

102221121211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71936045934 (or 71936045927 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 102221121211111 its reverse (111112121122201), we get a palindrome (213333242333312).

The spelling of 102221121211111 in words is "one hundred two trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred eleven thousand, one hundred eleven".