3211432042421 has 2 divisors, whose sum is σ = 3211432042422. Its totient is φ = 3211432042420.

The previous prime is 3211432042409. The next prime is 3211432042471. The reversal of 3211432042421 is 1242402341123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1846364616100 + 1365067426321 = 1358810^2 + 1168361^2 .

It is an emirp because it is prime and its reverse (1242402341123) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3211432042421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3211432042471) 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, 1605716021210 + 1605716021211.

It is an arithmetic number, because the mean of its divisors is an integer number (1605716021211).

Almost surely, 2^{3211432042421} is an apocalyptic number.

It is an amenable number.

3211432042421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3211432042421 is an equidigital number, since it uses as much as digits as its factorization.

3211432042421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 3211432042421 its reverse (1242402341123), we get a palindrome (4453834383544).

The spelling of 3211432042421 in words is "three trillion, two hundred eleven billion, four hundred thirty-two million, forty-two thousand, four hundred twenty-one".