101220110111 has 2 divisors, whose sum is σ = 101220110112. Its totient is φ = 101220110110.

The previous prime is 101220110099. The next prime is 101220110113. The reversal of 101220110111 is 111011022101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101220110111 - 2¹⁴ = 101220093727 is a prime.

It is a Sophie Germain prime.

Together with 101220110113, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 101220110092 and 101220110101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101220110113) 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, 50610055055 + 50610055056.

It is an arithmetic number, because the mean of its divisors is an integer number (50610055056).

Almost surely, 2^101220110111 is an apocalyptic number.

101220110111 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220110111 is an equidigital number, since it uses as much as digits as its factorization.

101220110111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 101220110111 its reverse (111011022101), we get a palindrome (212231132212).

The spelling of 101220110111 in words is "one hundred one billion, two hundred twenty million, one hundred ten thousand, one hundred eleven".