2121123 has 8 divisors (see below), whose sum is σ = 2853648. Its totient is φ = 1401344.

The previous prime is 2121121. The next prime is 2121127. The reversal of 2121123 is 3211212.

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

It is a cyclic number.

It is not a de Polignac number, because 2121123 - 2¹ = 2121121 is a prime.

It is a super-2 number, since 2×2121123² = 8998325562258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2121099 and 2121108.

It is not an unprimeable number, because it can be changed into a prime (2121121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2790 + ... + 3467.

It is an arithmetic number, because the mean of its divisors is an integer number (356706).

2^2121123 is an apocalyptic number.

2121123 is a deficient number, since it is larger than the sum of its proper divisors (732525).

2121123 is a wasteful number, since it uses less digits than its factorization.

2121123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6373.

The product of its digits is 24, while the sum is 12.

The square root of 2121123 is about 1456.4075665829. The cubic root of 2121123 is about 128.4858448073.

Adding to 2121123 its reverse (3211212), we get a palindrome (5332335).

The spelling of 2121123 in words is "two million, one hundred twenty-one thousand, one hundred twenty-three".