111012121121 has 8 divisors (see below), whose sum is σ = 121287909600. Its totient is φ = 100766962240.

The previous prime is 111012121037. The next prime is 111012121147. The reversal of 111012121121 is 121121210111.

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 111012121121 - 2¹⁴ = 111012104737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111012121096 and 111012121105.

It is not an unprimeable number, because it can be changed into a prime (111012121021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7649816 + ... + 7664313.

It is an arithmetic number, because the mean of its divisors is an integer number (15160988700).

Almost surely, 2^111012121121 is an apocalyptic number.

111012121121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111012121121 is a deficient number, since it is larger than the sum of its proper divisors (10275788479).

111012121121 is a wasteful number, since it uses less digits than its factorization.

111012121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15314799.

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

Adding to 111012121121 its reverse (121121210111), we get a palindrome (232133331232).

The spelling of 111012121121 in words is "one hundred eleven billion, twelve million, one hundred twenty-one thousand, one hundred twenty-one".