111403110021 has 16 divisors (see below), whose sum is σ = 169804481664. Its totient is φ = 63641159424.

The previous prime is 111403110011. The next prime is 111403110053. The reversal of 111403110021 is 120011304111.

It is not a de Polignac number, because 111403110021 - 2⁹ = 111403109509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111403110011) 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, 662776 + ... + 813681.

It is an arithmetic number, because the mean of its divisors is an integer number (10612780104).

Almost surely, 2^111403110021 is an apocalyptic number.

It is an amenable number.

111403110021 is a deficient number, since it is larger than the sum of its proper divisors (58401371643).

111403110021 is a wasteful number, since it uses less digits than its factorization.

111403110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480060.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 111403110021 its reverse (120011304111), we get a palindrome (231414414132).

The spelling of 111403110021 in words is "one hundred eleven billion, four hundred three million, one hundred ten thousand, twenty-one".