66350335221222 has 128 divisors (see below), whose sum is σ = 154891210328064. Its totient is φ = 18762316996608.

The previous prime is 66350335221187. The next prime is 66350335221257. The reversal of 66350335221222 is 22212253305366.

66350335221222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (66350335221187) and next prime (66350335221257).

It is a congruent number.

It is an unprimeable number.

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 in 63 ways as a sum of consecutive naturals, for example, 25756053 + ... + 28214799.

It is an arithmetic number, because the mean of its divisors is an integer number (1210087580688).

Almost surely, 2^{66350335221222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66350335221222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77445605164032).

66350335221222 is an abundant number, since it is smaller than the sum of its proper divisors (88540875106842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66350335221222 is a wasteful number, since it uses less digits than its factorization.

66350335221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459262.

The product of its (nonzero) digits is 777600, while the sum is 42.

Adding to 66350335221222 its reverse (22212253305366), we get a palindrome (88562588526588).

The spelling of 66350335221222 in words is "sixty-six trillion, three hundred fifty billion, three hundred thirty-five million, two hundred twenty-one thousand, two hundred twenty-two".