3402221 has 4 divisors (see below), whose sum is σ = 3485244. Its totient is φ = 3319200.

The previous prime is 3402211. The next prime is 3402233. The reversal of 3402221 is 1222043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1222043 = 151 ⋅8093.

It can be written as a sum of positive squares in 2 ways, for example, as 546121 + 2856100 = 739^2 + 1690^2 .

It is a cyclic number.

It is not a de Polignac number, because 3402221 - 2¹⁰ = 3401197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3402196 and 3402205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3402211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41450 + ... + 41531.

It is an arithmetic number, because the mean of its divisors is an integer number (871311).

Almost surely, 2^3402221 is an apocalyptic number.

It is an amenable number.

3402221 is a deficient number, since it is larger than the sum of its proper divisors (83023).

3402221 is an equidigital number, since it uses as much as digits as its factorization.

3402221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83022.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 3402221 is about 1844.5110463209. The cubic root of 3402221 is about 150.4021947064.

Adding to 3402221 its reverse (1222043), we get a palindrome (4624264).

It can be divided in two parts, 34022 and 21, that added together give a palindrome (34043).

The spelling of 3402221 in words is "three million, four hundred two thousand, two hundred twenty-one".