2123115 has 16 divisors (see below), whose sum is σ = 3456000. Its totient is φ = 1112672.

The previous prime is 2123087. The next prime is 2123123. The reversal of 2123115 is 5113212.

It is a cyclic number.

It is not a de Polignac number, because 2123115 - 2⁵ = 2123083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

2123115 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2123094 and 2123103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315 + ... + 2084.

It is an arithmetic number, because the mean of its divisors is an integer number (216000).

2^2123115 is an apocalyptic number.

2123115 is a deficient number, since it is larger than the sum of its proper divisors (1332885).

2123115 is a wasteful number, since it uses less digits than its factorization.

2123115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466.

The product of its digits is 60, while the sum is 15.

The square root of 2123115 is about 1457.0912805998. The cubic root of 2123115 is about 128.5260536533.

Adding to 2123115 its reverse (5113212), we get a palindrome (7236327).

The spelling of 2123115 in words is "two million, one hundred twenty-three thousand, one hundred fifteen".