111021000003 has 64 divisors (see below), whose sum is σ = 178367777280. Its totient is φ = 67976423424.

The previous prime is 111020999993. The next prime is 111021000007. The reversal of 111021000003 is 300000120111.

It is not a de Polignac number, because 111021000003 - 2²⁴ = 111004222787 is a prime.

It is a super-2 number, since 2×111021000003² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (111021000007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29268075 + ... + 29271867.

It is an arithmetic number, because the mean of its divisors is an integer number (2786996520).

Almost surely, 2^111021000003 is an apocalyptic number.

111021000003 is a deficient number, since it is larger than the sum of its proper divisors (67346777277).

111021000003 is a wasteful number, since it uses less digits than its factorization.

111021000003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5345 (or 5339 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 111021000003 its reverse (300000120111), we get a palindrome (411021120114).

The spelling of 111021000003 in words is "one hundred eleven billion, twenty-one million, three", and thus it is an aban number.