2248021 has 2 divisors, whose sum is σ = 2248022. Its totient is φ = 2248020.

The previous prime is 2248019. The next prime is 2248039. The reversal of 2248021 is 1208422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2235025 + 12996 = 1495^2 + 114^2 .

It is a cyclic number.

It is not a de Polignac number, because 2248021 - 2¹ = 2248019 is a prime.

Together with 2248019, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2248021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2278021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1124010 + 1124011.

It is an arithmetic number, because the mean of its divisors is an integer number (1124011).

2^2248021 is an apocalyptic number.

It is an amenable number.

2248021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2248021 is an equidigital number, since it uses as much as digits as its factorization.

2248021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 2248021 is about 1499.3401882161. The cubic root of 2248021 is about 130.9986403138.

The spelling of 2248021 in words is "two million, two hundred forty-eight thousand, twenty-one".