111001110009901 has 2 divisors, whose sum is σ = 111001110009902. Its totient is φ = 111001110009900.

The previous prime is 111001110009899. The next prime is 111001110010061. The reversal of 111001110009901 is 109900011100111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64993038454276 + 46008071555625 = 8061826^2 + 6782925^2 .It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 106600011100111 and 111001110006601.

It is a cyclic number.

It is not a de Polignac number, because 111001110009901 - 2¹ = 111001110009899 is a prime.

Together with 111001110009899, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111001110007901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500555004950 + 55500555004951.

It is an arithmetic number, because the mean of its divisors is an integer number (55500555004951).

Almost surely, 2^{111001110009901} is an apocalyptic number.

It is an amenable number.

111001110009901 is a deficient number, since it is larger than the sum of its proper divisors (1).

111001110009901 is an equidigital number, since it uses as much as digits as its factorization.

111001110009901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 25.

The spelling of 111001110009901 in words is "one hundred eleven trillion, one billion, one hundred ten million, nine thousand, nine hundred one".