3211452221 has 4 divisors (see below), whose sum is σ = 3211623744. Its totient is φ = 3211280700.

The previous prime is 3211452197. The next prime is 3211452227. The reversal of 3211452221 is 1222541123.

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: 1222541123 = 1453 ⋅841391.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3211452221 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 (3211452227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53675 + ... + 96456.

It is an arithmetic number, because the mean of its divisors is an integer number (802905936).

Almost surely, 2^3211452221 is an apocalyptic number.

It is an amenable number.

3211452221 is a deficient number, since it is larger than the sum of its proper divisors (171523).

3211452221 is a wasteful number, since it uses less digits than its factorization.

3211452221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171522.

The product of its digits is 960, while the sum is 23.

The square root of 3211452221 is about 56669.6763798771. The cubic root of 3211452221 is about 1475.3684374641.

Adding to 3211452221 its reverse (1222541123), we get a palindrome (4433993344).

The spelling of 3211452221 in words is "three billion, two hundred eleven million, four hundred fifty-two thousand, two hundred twenty-one".