111012200001021 has 16 divisors (see below), whose sum is σ = 161472689651520. Its totient is φ = 67279955070720.

The previous prime is 111012200000953. The next prime is 111012200001067. The reversal of 111012200001021 is 120100002210111.

It is not a de Polignac number, because 111012200001021 - 2¹⁰ = 111012199999997 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111012200000988 and 111012200001006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012200001721) 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, 10147365 + ... + 18027573.

It is an arithmetic number, because the mean of its divisors is an integer number (10092043103220).

Almost surely, 2^{111012200001021} is an apocalyptic number.

111012200001021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111012200001021 is a deficient number, since it is larger than the sum of its proper divisors (50460489650499).

111012200001021 is a wasteful number, since it uses less digits than its factorization.

111012200001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8307116.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111012200001021 its reverse (120100002210111), we get a palindrome (231112202211132).

The spelling of 111012200001021 in words is "one hundred eleven trillion, twelve billion, two hundred million, one thousand, twenty-one".