2252121 has 4 divisors (see below), whose sum is σ = 3002832. Its totient is φ = 1501412.

The previous prime is 2252113. The next prime is 2252149. The reversal of 2252121 is 1212522.

2252121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2252121 - 2³ = 2252113 is a prime.

It is a D-number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2252121.

It is not an unprimeable number, because it can be changed into a prime (2252161) 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 3 ways as a sum of consecutive naturals, for example, 375351 + ... + 375356.

It is an arithmetic number, because the mean of its divisors is an integer number (750708).

2^2252121 is an apocalyptic number.

It is an amenable number.

2252121 is a deficient number, since it is larger than the sum of its proper divisors (750711).

2252121 is an equidigital number, since it uses as much as digits as its factorization.

2252121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750710.

The product of its digits is 80, while the sum is 15.

The square root of 2252121 is about 1500.7068334622. The cubic root of 2252121 is about 131.0782315384.

Adding to 2252121 its reverse (1212522), we get a palindrome (3464643).

It can be divided in two parts, 225 and 2121, that added together give a triangular number (2346 = T₆₈).

The spelling of 2252121 in words is "two million, two hundred fifty-two thousand, one hundred twenty-one".