2124121 has 4 divisors (see below), whose sum is σ = 2127312. Its totient is φ = 2120932.

The previous prime is 2124049. The next prime is 2124127. The reversal of 2124121 is 1214212.

It is a happy number.

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 2124121 - 2¹¹ = 2122073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2124127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175 + ... + 2068.

It is an arithmetic number, because the mean of its divisors is an integer number (531828).

2^2124121 is an apocalyptic number.

It is an amenable number.

2124121 is a deficient number, since it is larger than the sum of its proper divisors (3191).

2124121 is an equidigital number, since it uses as much as digits as its factorization.

2124121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3190.

The product of its digits is 32, while the sum is 13.

The square root of 2124121 is about 1457.4364480141. The cubic root of 2124121 is about 128.5463503704.

Adding to 2124121 its reverse (1214212), we get a palindrome (3338333).

Subtracting from 2124121 its reverse (1214212), we obtain a palindrome (909909).

It can be divided in two parts, 21 and 24121, that added together give a palindrome (24142).

The spelling of 2124121 in words is "two million, one hundred twenty-four thousand, one hundred twenty-one".