3211041221 has 4 divisors (see below), whose sum is σ = 3211270944. Its totient is φ = 3210811500.

The previous prime is 3211041161. The next prime is 3211041283. The reversal of 3211041221 is 1221401123.

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: 1221401123 = 1619 ⋅754417.

It is a cyclic number.

It is not a de Polignac number, because 3211041221 - 2²² = 3206846917 is a prime.

It is a super-2 number, since 2×3211041221² = 20621571445922341682, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3211041221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3211047221) 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, 92435 + ... + 122336.

It is an arithmetic number, because the mean of its divisors is an integer number (802817736).

Almost surely, 2^3211041221 is an apocalyptic number.

It is an amenable number.

3211041221 is a deficient number, since it is larger than the sum of its proper divisors (229723).

3211041221 is a wasteful number, since it uses less digits than its factorization.

3211041221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229722.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 3211041221 is about 56666.0499858601. The cubic root of 3211041221 is about 1475.3054958148.

Adding to 3211041221 its reverse (1221401123), we get a palindrome (4432442344).

The spelling of 3211041221 in words is "three billion, two hundred eleven million, forty-one thousand, two hundred twenty-one".