2140121 has 2 divisors, whose sum is σ = 2140122. Its totient is φ = 2140120.

The previous prime is 2140109. The next prime is 2140129. The reversal of 2140121 is 1210412.

2140121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1849600 + 290521 = 1360^2 + 539^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140121 - 2⁶ = 2140057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2140129) 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 as a sum of consecutive naturals, namely, 1070060 + 1070061.

It is an arithmetic number, because the mean of its divisors is an integer number (1070061).

2^2140121 is an apocalyptic number.

It is an amenable number.

2140121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140121 is an equidigital number, since it uses as much as digits as its factorization.

2140121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2140121 is about 1462.9152401968. The cubic root of 2140121 is about 128.8683029889.

Adding to 2140121 its reverse (1210412), we get a palindrome (3350533).

The spelling of 2140121 in words is "two million, one hundred forty thousand, one hundred twenty-one".