102020312111 has 2 divisors, whose sum is σ = 102020312112. Its totient is φ = 102020312110.

The previous prime is 102020312083. The next prime is 102020312117. The reversal of 102020312111 is 111213020201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102020312111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102020312117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010156055 + 51010156056.

It is an arithmetic number, because the mean of its divisors is an integer number (51010156056).

Almost surely, 2^102020312111 is an apocalyptic number.

102020312111 is a deficient number, since it is larger than the sum of its proper divisors (1).

102020312111 is an equidigital number, since it uses as much as digits as its factorization.

102020312111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 102020312111 its reverse (111213020201), we get a palindrome (213233332312).

The spelling of 102020312111 in words is "one hundred two billion, twenty million, three hundred twelve thousand, one hundred eleven".