2149221 has 8 divisors (see below), whose sum is σ = 2888704. Its totient is φ = 1421280.

The previous prime is 2149211. The next prime is 2149237. The reversal of 2149221 is 1229412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2149221 - 2⁷ = 2149093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2440 + ... + 3201.

It is an arithmetic number, because the mean of its divisors is an integer number (361088).

2^2149221 is an apocalyptic number.

It is an amenable number.

2149221 is a deficient number, since it is larger than the sum of its proper divisors (739483).

2149221 is a wasteful number, since it uses less digits than its factorization.

2149221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5771.

The product of its digits is 288, while the sum is 21.

The square root of 2149221 is about 1466.0221690002. The cubic root of 2149221 is about 129.0506981784.

The spelling of 2149221 in words is "two million, one hundred forty-nine thousand, two hundred twenty-one".