161102249111 has 2 divisors, whose sum is σ = 161102249112. Its totient is φ = 161102249110.

The previous prime is 161102249107. The next prime is 161102249149. The reversal of 161102249111 is 111942201161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161102249111 - 2² = 161102249107 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161102249171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80551124555 + 80551124556.

It is an arithmetic number, because the mean of its divisors is an integer number (80551124556).

Almost surely, 2^161102249111 is an apocalyptic number.

161102249111 is a deficient number, since it is larger than the sum of its proper divisors (1).

161102249111 is an equidigital number, since it uses as much as digits as its factorization.

161102249111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 29.

The spelling of 161102249111 in words is "one hundred sixty-one billion, one hundred two million, two hundred forty-nine thousand, one hundred eleven".