111012102021 has 8 divisors (see below), whose sum is σ = 149679239040. Its totient is φ = 73176516512.

The previous prime is 111012101969. The next prime is 111012102031. The reversal of 111012102021 is 120201210111.

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 111012102021 - 2²³ = 111003713413 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111012101988 and 111012102006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012102031) 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, 207887565 + ... + 207888098.

It is an arithmetic number, because the mean of its divisors is an integer number (18709904880).

Almost surely, 2^111012102021 is an apocalyptic number.

It is an amenable number.

111012102021 is a deficient number, since it is larger than the sum of its proper divisors (38667137019).

111012102021 is an equidigital number, since it uses as much as digits as its factorization.

111012102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415775755.

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

Adding to 111012102021 its reverse (120201210111), we get a palindrome (231213312132).

The spelling of 111012102021 in words is "one hundred eleven billion, twelve million, one hundred two thousand, twenty-one".