221164373042 has 18 divisors (see below), whose sum is σ = 333668015037. Its totient is φ = 109945374336.

The previous prime is 221164372937. The next prime is 221164373071. The reversal of 221164373042 is 240373461122.

221164373042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 205344016201 + 15820356841 = 453149^2 + 125779^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=332539.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221164372993 and 221164373011.

It is an unprimeable number.

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 in 8 ways as a sum of consecutive naturals, for example, 128359193 + ... + 128360915.

Almost surely, 2^221164373042 is an apocalyptic number.

221164373042 is a deficient number, since it is larger than the sum of its proper divisors (112503641995).

221164373042 is an frugal number, since it uses more digits than its factorization.

221164373042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3834 (or 1918 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 221164373042 in words is "two hundred twenty-one billion, one hundred sixty-four million, three hundred seventy-three thousand, forty-two".