1100002123 has 4 divisors (see below), whose sum is σ = 1200002328. Its totient is φ = 1000001920.

The previous prime is 1100002097. The next prime is 1100002129. The reversal of 1100002123 is 3212000011.

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

It is a cyclic number.

It is not a de Polignac number, because 1100002123 - 2⁵ = 1100002091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100002129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50000086 + ... + 50000107.

It is an arithmetic number, because the mean of its divisors is an integer number (300000582).

Almost surely, 2^1100002123 is an apocalyptic number.

1100002123 is a deficient number, since it is larger than the sum of its proper divisors (100000205).

1100002123 is a wasteful number, since it uses less digits than its factorization.

1100002123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100000204.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1100002123 is about 33166.2799089678. The cubic root of 1100002123 is about 1032.2807795561.

Adding to 1100002123 its reverse (3212000011), we get a palindrome (4312002134).

The spelling of 1100002123 in words is "one billion, one hundred million, two thousand, one hundred twenty-three".