111211001002111 has 4 divisors (see below), whose sum is σ = 111319924608424. Its totient is φ = 111102077395800.

The previous prime is 111211001002097. The next prime is 111211001002117. The reversal of 111211001002111 is 111200100112111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111211001002111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111211001002091 and 111211001002100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211001002117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54461801625 + ... + 54461803666.

It is an arithmetic number, because the mean of its divisors is an integer number (27829981152106).

Almost surely, 2^{111211001002111} is an apocalyptic number.

111211001002111 is a deficient number, since it is larger than the sum of its proper divisors (108923606313).

111211001002111 is a wasteful number, since it uses less digits than its factorization.

111211001002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108923606312.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 111211001002111 its reverse (111200100112111), we get a palindrome (222411101114222).

The spelling of 111211001002111 in words is "one hundred eleven trillion, two hundred eleven billion, one million, two thousand, one hundred eleven".