2115123001 has 4 divisors (see below), whose sum is σ = 2164311952. Its totient is φ = 2065934052.

The previous prime is 2115122953. The next prime is 2115123013. The reversal of 2115123001 is 1003215112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2115123001 - 2²⁷ = 1980905273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2115123061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24594411 + ... + 24594496.

It is an arithmetic number, because the mean of its divisors is an integer number (541077988).

Almost surely, 2^2115123001 is an apocalyptic number.

It is an amenable number.

2115123001 is a deficient number, since it is larger than the sum of its proper divisors (49188951).

2115123001 is an equidigital number, since it uses as much as digits as its factorization.

2115123001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49188950.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 2115123001 is about 45990.4664142472. The cubic root of 2115123001 is about 1283.6458153032.

Adding to 2115123001 its reverse (1003215112), we get a palindrome (3118338113).

The spelling of 2115123001 in words is "two billion, one hundred fifteen million, one hundred twenty-three thousand, one".