111012121220111 has 8 divisors (see below), whose sum is σ = 113601893837520. Its totient is φ = 108422716574592.

The previous prime is 111012121220009. The next prime is 111012121220173. The reversal of 111012121220111 is 111022121210111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111012121220111 - 2²² = 111012117025807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111012121220111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012181220111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91382516 + ... + 92589353.

It is an arithmetic number, because the mean of its divisors is an integer number (14200236729690).

Almost surely, 2^{111012121220111} is an apocalyptic number.

111012121220111 is a deficient number, since it is larger than the sum of its proper divisors (2589772617409).

111012121220111 is a wasteful number, since it uses less digits than its factorization.

111012121220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183985945.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111012121220111 its reverse (111022121210111), we get a palindrome (222034242430222).

The spelling of 111012121220111 in words is "one hundred eleven trillion, twelve billion, one hundred twenty-one million, two hundred twenty thousand, one hundred eleven".