2123100123 has 8 divisors (see below), whose sum is σ = 2953878528. Its totient is φ = 1353860904.

The previous prime is 2123100047. The next prime is 2123100127. The reversal of 2123100123 is 3210013212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2123100123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2123100127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15384715 + ... + 15384852.

It is an arithmetic number, because the mean of its divisors is an integer number (369234816).

Almost surely, 2^2123100123 is an apocalyptic number.

2123100123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2123100123 is a deficient number, since it is larger than the sum of its proper divisors (830778405).

2123100123 is a wasteful number, since it uses less digits than its factorization.

2123100123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30769593.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2123100123 is about 46077.1106190482. The cubic root of 2123100123 is about 1285.2575345181.

Adding to 2123100123 its reverse (3210013212), we get a palindrome (5333113335).

The spelling of 2123100123 in words is "two billion, one hundred twenty-three million, one hundred thousand, one hundred twenty-three".