2214421 has 6 divisors (see below), whose sum is σ = 2434166. Its totient is φ = 2013000.

The previous prime is 2214383. The next prime is 2214473. The reversal of 2214421 is 1244122.

It can be written as a sum of positive squares in only one way, i.e., 1234321 + 980100 = 1111^2 + 990^2 .

It is not a de Polignac number, because 2214421 - 2²¹ = 117269 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2214395 and 2214404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2214481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9030 + ... + 9271.

2^2214421 is an apocalyptic number.

It is an amenable number.

2214421 is a deficient number, since it is larger than the sum of its proper divisors (219745).

2214421 is a wasteful number, since it uses less digits than its factorization.

2214421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18323 (or 18312 counting only the distinct ones).

The product of its digits is 128, while the sum is 16.

The square root of 2214421 is about 1488.0930750460. The cubic root of 2214421 is about 130.3427052360.

Adding to 2214421 its reverse (1244122), we get a palindrome (3458543).

Subtracting from 2214421 its reverse (1244122), we obtain a cube (970299 = 99³).

The spelling of 2214421 in words is "two million, two hundred fourteen thousand, four hundred twenty-one".