111012012022121 has 16 divisors (see below), whose sum is σ = 127158823814400. Its totient is φ = 94937432644608.

The previous prime is 111012012022117. The next prime is 111012012022183. The reversal of 111012012022121 is 121220210210111.

It is a cyclic number.

It is not a de Polignac number, because 111012012022121 - 2² = 111012012022117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111012012022121.

It is not an unprimeable number, because it can be changed into a prime (111012012028121) 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 in 15 ways as a sum of consecutive naturals, for example, 4717340 + ... + 15629373.

It is an arithmetic number, because the mean of its divisors is an integer number (7947426488400).

Almost surely, 2^{111012012022121} is an apocalyptic number.

It is an amenable number.

111012012022121 is a deficient number, since it is larger than the sum of its proper divisors (16146811792279).

111012012022121 is an equidigital number, since it uses as much as digits as its factorization.

111012012022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20348488.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111012012022121 its reverse (121220210210111), we get a palindrome (232232222232232).

The spelling of 111012012022121 in words is "one hundred eleven trillion, twelve billion, twelve million, twenty-two thousand, one hundred twenty-one".