111011112212989 has 2 divisors, whose sum is σ = 111011112212990. Its totient is φ = 111011112212988.

The previous prime is 111011112212971. The next prime is 111011112212999. The reversal of 111011112212989 is 989212211110111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110996970960100 + 14141252889 = 10535510^2 + 118917^2 .

It is a cyclic number.

It is not a de Polignac number, because 111011112212989 - 2⁹ = 111011112212477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111011112212909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505556106494 + 55505556106495.

It is an arithmetic number, because the mean of its divisors is an integer number (55505556106495).

Almost surely, 2^{111011112212989} is an apocalyptic number.

It is an amenable number.

111011112212989 is a deficient number, since it is larger than the sum of its proper divisors (1).

111011112212989 is an equidigital number, since it uses as much as digits as its factorization.

111011112212989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 40.

The spelling of 111011112212989 in words is "one hundred eleven trillion, eleven billion, one hundred twelve million, two hundred twelve thousand, nine hundred eighty-nine".