111209214101 has 2 divisors, whose sum is σ = 111209214102. Its totient is φ = 111209214100.

The previous prime is 111209214097. The next prime is 111209214107. The reversal of 111209214101 is 101412902111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96502801201 + 14706412900 = 310649^2 + 121270^2 .

It is a cyclic number.

It is not a de Polignac number, because 111209214101 - 2² = 111209214097 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111209214107) 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, 55604607050 + 55604607051.

It is an arithmetic number, because the mean of its divisors is an integer number (55604607051).

Almost surely, 2^111209214101 is an apocalyptic number.

It is an amenable number.

111209214101 is a deficient number, since it is larger than the sum of its proper divisors (1).

111209214101 is an equidigital number, since it uses as much as digits as its factorization.

111209214101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 111209214101 in words is "one hundred eleven billion, two hundred nine million, two hundred fourteen thousand, one hundred one".