2321121 has 16 divisors (see below), whose sum is σ = 3469248. Its totient is φ = 1368000.

The previous prime is 2321117. The next prime is 2321147. The reversal of 2321121 is 1211232.

2321121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2321121 - 2² = 2321117 is a prime.

2321121 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2321097 and 2321106.

It is not an unprimeable number, because it can be changed into a prime (2321101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271 + ... + 2171.

It is an arithmetic number, because the mean of its divisors is an integer number (216828).

2^2321121 is an apocalyptic number.

It is an amenable number.

2321121 is a deficient number, since it is larger than the sum of its proper divisors (1148127).

2321121 is a wasteful number, since it uses less digits than its factorization.

2321121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952.

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

The square root of 2321121 is about 1523.5225630098. The cubic root of 2321121 is about 132.4034374174.

Adding to 2321121 its reverse (1211232), we get a palindrome (3532353).

It can be divided in two parts, 23211 and 21, that added together give a palindrome (23232).

The spelling of 2321121 in words is "two million, three hundred twenty-one thousand, one hundred twenty-one".