6612251323021 has 2 divisors, whose sum is σ = 6612251323022. Its totient is φ = 6612251323020.

The previous prime is 6612251322997. The next prime is 6612251323063. The reversal of 6612251323021 is 1203231522166.

6612251323021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6611141433796 + 1109889225 = 2571214^2 + 33315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6612251323021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6612251323921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3306125661510 + 3306125661511.

It is an arithmetic number, because the mean of its divisors is an integer number (3306125661511).

Almost surely, 2^{6612251323021} is an apocalyptic number.

It is an amenable number.

6612251323021 is a deficient number, since it is larger than the sum of its proper divisors (1).

6612251323021 is an equidigital number, since it uses as much as digits as its factorization.

6612251323021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

Adding to 6612251323021 its reverse (1203231522166), we get a palindrome (7815482845187).

The spelling of 6612251323021 in words is "six trillion, six hundred twelve billion, two hundred fifty-one million, three hundred twenty-three thousand, twenty-one".