3418621221 has 4 divisors (see below), whose sum is σ = 4558161632. Its totient is φ = 2279080812.

The previous prime is 3418621177. The next prime is 3418621223. The reversal of 3418621221 is 1221268143.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1221268143 = 3 ⋅407089381.

It is not a de Polignac number, because 3418621221 - 2¹⁰ = 3418620197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3418621223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569770201 + ... + 569770206.

It is an arithmetic number, because the mean of its divisors is an integer number (1139540408).

Almost surely, 2^3418621221 is an apocalyptic number.

It is an amenable number.

3418621221 is a deficient number, since it is larger than the sum of its proper divisors (1139540411).

3418621221 is a wasteful number, since it uses less digits than its factorization.

3418621221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139540410.

The product of its digits is 4608, while the sum is 30.

The square root of 3418621221 is about 58468.9765687753. The cubic root of 3418621221 is about 1506.4347595517.

Adding to 3418621221 its reverse (1221268143), we get a palindrome (4639889364).

The spelling of 3418621221 in words is "three billion, four hundred eighteen million, six hundred twenty-one thousand, two hundred twenty-one".