111403241021 has 8 divisors (see below), whose sum is σ = 114000188544. Its totient is φ = 108806574240.

The previous prime is 111403241011. The next prime is 111403241039. The reversal of 111403241021 is 120142304111.

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-111403241021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111403240984 and 111403241002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111403241011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 881225 + ... + 999681.

It is an arithmetic number, because the mean of its divisors is an integer number (14250023568).

Almost surely, 2^111403241021 is an apocalyptic number.

It is an amenable number.

111403241021 is a deficient number, since it is larger than the sum of its proper divisors (2596947523).

111403241021 is a wasteful number, since it uses less digits than its factorization.

111403241021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140371.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 111403241021 its reverse (120142304111), we get a palindrome (231545545132).

The spelling of 111403241021 in words is "one hundred eleven billion, four hundred three million, two hundred forty-one thousand, twenty-one".