612220616213 has 2 divisors, whose sum is σ = 612220616214. Its totient is φ = 612220616212.

The previous prime is 612220616197. The next prime is 612220616233. The reversal of 612220616213 is 312616022216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 611738286769 + 482329444 = 782137^2 + 21962^2 .

It is a cyclic number.

It is not a de Polignac number, because 612220616213 - 2⁴ = 612220616197 is a prime.

It is a super-2 number, since 2×612220616213² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 612220616213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612220616233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306110308106 + 306110308107.

It is an arithmetic number, because the mean of its divisors is an integer number (306110308107).

Almost surely, 2^612220616213 is an apocalyptic number.

It is an amenable number.

612220616213 is a deficient number, since it is larger than the sum of its proper divisors (1).

612220616213 is an equidigital number, since it uses as much as digits as its factorization.

612220616213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

Adding to 612220616213 its reverse (312616022216), we get a palindrome (924836638429).

The spelling of 612220616213 in words is "six hundred twelve billion, two hundred twenty million, six hundred sixteen thousand, two hundred thirteen".