3221121311 has 2 divisors, whose sum is σ = 3221121312. Its totient is φ = 3221121310.

The previous prime is 3221121251. The next prime is 3221121331. The reversal of 3221121311 is 1131211223.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3221121311 - 2¹⁴ = 3221104927 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3221121311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3221121331) 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 as a sum of consecutive naturals, namely, 1610560655 + 1610560656.

It is an arithmetic number, because the mean of its divisors is an integer number (1610560656).

Almost surely, 2^3221121311 is an apocalyptic number.

3221121311 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221121311 is an equidigital number, since it uses as much as digits as its factorization.

3221121311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 17.

The square root of 3221121311 is about 56754.9232313814. The cubic root of 3221121311 is about 1476.8476412868.

Adding to 3221121311 its reverse (1131211223), we get a palindrome (4352332534).

The spelling of 3221121311 in words is "three billion, two hundred twenty-one million, one hundred twenty-one thousand, three hundred eleven".