111121012120001 has 16 divisors (see below), whose sum is σ = 120771315846720. Its totient is φ = 101628285733440.

The previous prime is 111121012119983. The next prime is 111121012120021. The reversal of 111121012120001 is 100021210121111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111121012120001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111121012120021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35586086 + ... + 38582528.

It is an arithmetic number, because the mean of its divisors is an integer number (7548207240420).

Almost surely, 2^{111121012120001} is an apocalyptic number.

It is an amenable number.

111121012120001 is a deficient number, since it is larger than the sum of its proper divisors (9650303726719).

111121012120001 is a wasteful number, since it uses less digits than its factorization.

111121012120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3022736.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111121012120001 its reverse (100021210121111), we get a palindrome (211142222241112).

The spelling of 111121012120001 in words is "one hundred eleven trillion, one hundred twenty-one billion, twelve million, one hundred twenty thousand, one".