201422420666 has 8 divisors (see below), whose sum is σ = 306272448084. Its totient is φ = 99331604640.

The previous prime is 201422420629. The next prime is 201422420669. The reversal of 201422420666 is 666024224102.

201422420666 is digitally balanced in base 3, 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 201264390625 + 158030041 = 448625^2 + 12571^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (201422420669) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 689802665 + ... + 689802956.

Almost surely, 2^201422420666 is an apocalyptic number.

201422420666 is a deficient number, since it is larger than the sum of its proper divisors (104850027418).

201422420666 is a wasteful number, since it uses less digits than its factorization.

201422420666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379605696.

The product of its (nonzero) digits is 55296, while the sum is 35.

Adding to 201422420666 its reverse (666024224102), we get a palindrome (867446644768).

The spelling of 201422420666 in words is "two hundred one billion, four hundred twenty-two million, four hundred twenty thousand, six hundred sixty-six".