3455221421 has 8 divisors (see below), whose sum is σ = 3705700320. Its totient is φ = 3211605072.

The previous prime is 3455221409. The next prime is 3455221433. The reversal of 3455221421 is 1241225543.

It is an interprime number because it is at equal distance from previous prime (3455221409) and next prime (3455221433).

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

It is a cyclic number.

It is not a de Polignac number, because 3455221421 - 2²² = 3451027117 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 (3455221921) 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, 1714595 + ... + 1716608.

It is an arithmetic number, because the mean of its divisors is an integer number (463212540).

Almost surely, 2^3455221421 is an apocalyptic number.

It is an amenable number.

3455221421 is a deficient number, since it is larger than the sum of its proper divisors (250478899).

3455221421 is a wasteful number, since it uses less digits than its factorization.

3455221421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3431275.

The product of its digits is 9600, while the sum is 29.

The square root of 3455221421 is about 58781.1315049311. The cubic root of 3455221421 is about 1511.7917156905.

Adding to 3455221421 its reverse (1241225543), we get a palindrome (4696446964).

The spelling of 3455221421 in words is "three billion, four hundred fifty-five million, two hundred twenty-one thousand, four hundred twenty-one".