135224220613 has 2 divisors, whose sum is σ = 135224220614. Its totient is φ = 135224220612.

The previous prime is 135224220587. The next prime is 135224220697. The reversal of 135224220613 is 316022422531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133091443489 + 2132777124 = 364817^2 + 46182^2 .

It is a cyclic number.

It is not a de Polignac number, because 135224220613 - 2⁵ = 135224220581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135224230613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67612110306 + 67612110307.

It is an arithmetic number, because the mean of its divisors is an integer number (67612110307).

Almost surely, 2^135224220613 is an apocalyptic number.

It is an amenable number.

135224220613 is a deficient number, since it is larger than the sum of its proper divisors (1).

135224220613 is an equidigital number, since it uses as much as digits as its factorization.

135224220613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 135224220613 in words is "one hundred thirty-five billion, two hundred twenty-four million, two hundred twenty thousand, six hundred thirteen".