3212511213421 has 2 divisors, whose sum is σ = 3212511213422. Its totient is φ = 3212511213420.

The previous prime is 3212511213419. The next prime is 3212511213451. The reversal of 3212511213421 is 1243121152123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3092005728100 + 120505485321 = 1758410^2 + 347139^2 .

It is an emirp because it is prime and its reverse (1243121152123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3212511213421 - 2¹ = 3212511213419 is a prime.

Together with 3212511213419, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3212511213421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3212511213451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1606255606710 + 1606255606711.

It is an arithmetic number, because the mean of its divisors is an integer number (1606255606711).

Almost surely, 2^{3212511213421} is an apocalyptic number.

It is an amenable number.

3212511213421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3212511213421 is an equidigital number, since it uses as much as digits as its factorization.

3212511213421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 28.

Adding to 3212511213421 its reverse (1243121152123), we get a palindrome (4455632365544).

The spelling of 3212511213421 in words is "three trillion, two hundred twelve billion, five hundred eleven million, two hundred thirteen thousand, four hundred twenty-one".