101220220171111 has 2 divisors, whose sum is σ = 101220220171112. Its totient is φ = 101220220171110.

The previous prime is 101220220171067. The next prime is 101220220171123. The reversal of 101220220171111 is 111171022022101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101220220171111 - 2³⁹ = 100670464357223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101220220171141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610110085555 + 50610110085556.

It is an arithmetic number, because the mean of its divisors is an integer number (50610110085556).

Almost surely, 2^{101220220171111} is an apocalyptic number.

101220220171111 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220220171111 is an equidigital number, since it uses as much as digits as its factorization.

101220220171111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 22.

Adding to 101220220171111 its reverse (111171022022101), we get a palindrome (212391242193212).

The spelling of 101220220171111 in words is "one hundred one trillion, two hundred twenty billion, two hundred twenty million, one hundred seventy-one thousand, one hundred eleven".