102122110111111 has 4 divisors (see below), whose sum is σ = 102122144371800. Its totient is φ = 102122075850424.

The previous prime is 102122110111079. The next prime is 102122110111141. The reversal of 102122110111111 is 111111011221201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102122110111111 - 2⁵ = 102122110111079 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 (102122110111141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12182956 + ... + 18779473.

It is an arithmetic number, because the mean of its divisors is an integer number (25530536092950).

Almost surely, 2^{102122110111111} is an apocalyptic number.

102122110111111 is a deficient number, since it is larger than the sum of its proper divisors (34260689).

102122110111111 is an equidigital number, since it uses as much as digits as its factorization.

102122110111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34260688.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 102122110111111 its reverse (111111011221201), we get a palindrome (213233121332312).

The spelling of 102122110111111 in words is "one hundred two trillion, one hundred twenty-two billion, one hundred ten million, one hundred eleven thousand, one hundred eleven".