3421854221 has 4 divisors (see below), whose sum is σ = 3424233600. Its totient is φ = 3419474844.

The previous prime is 3421854209. The next prime is 3421854251. The reversal of 3421854221 is 1224581243.

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: 1224581243 = 139 ⋅8809937.

It is a cyclic number.

It is not a de Polignac number, because 3421854221 - 2⁶ = 3421854157 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 (3421854251) 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, 1187531 + ... + 1190408.

It is an arithmetic number, because the mean of its divisors is an integer number (856058400).

Almost surely, 2^3421854221 is an apocalyptic number.

It is an amenable number.

3421854221 is a deficient number, since it is larger than the sum of its proper divisors (2379379).

3421854221 is a wasteful number, since it uses less digits than its factorization.

3421854221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379378.

The product of its digits is 15360, while the sum is 32.

The square root of 3421854221 is about 58496.6171756966. The cubic root of 3421854221 is about 1506.9094898384.

The spelling of 3421854221 in words is "three billion, four hundred twenty-one million, eight hundred fifty-four thousand, two hundred twenty-one".