111012311203021 has 8 divisors (see below), whose sum is σ = 111348150401088. Its totient is φ = 110676474744000.

The previous prime is 111012311202997. The next prime is 111012311203033. The reversal of 111012311203021 is 120302113210111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111012311203021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111012311203021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012311203051) 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 7 ways as a sum of consecutive naturals, for example, 105233301 + ... + 106282981.

It is an arithmetic number, because the mean of its divisors is an integer number (13918518800136).

Almost surely, 2^{111012311203021} is an apocalyptic number.

It is an amenable number.

111012311203021 is a deficient number, since it is larger than the sum of its proper divisors (335839198067).

111012311203021 is a wasteful number, since it uses less digits than its factorization.

111012311203021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369523.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 111012311203021 its reverse (120302113210111), we get a palindrome (231314424413132).

The spelling of 111012311203021 in words is "one hundred eleven trillion, twelve billion, three hundred eleven million, two hundred three thousand, twenty-one".