1112123021003 has 4 divisors (see below), whose sum is σ = 1112147638680. Its totient is φ = 1112098403328.

The previous prime is 1112123020973. The next prime is 1112123021033. The reversal of 1112123021003 is 3001203212111.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1112123020973) and next prime (1112123021033).

It is a cyclic number.

It is not a de Polignac number, because 1112123021003 - 2⁸ = 1112123020747 is a prime.

It is a super-2 number, since 2×1112123021003² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1112123021033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12240950 + ... + 12331467.

It is an arithmetic number, because the mean of its divisors is an integer number (278036909670).

Almost surely, 2^{1112123021003} is an apocalyptic number.

1112123021003 is a deficient number, since it is larger than the sum of its proper divisors (24617677).

1112123021003 is an equidigital number, since it uses as much as digits as its factorization.

1112123021003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24617676.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1112123021003 its reverse (3001203212111), we get a palindrome (4113326233114).

The spelling of 1112123021003 in words is "one trillion, one hundred twelve billion, one hundred twenty-three million, twenty-one thousand, three".