22134340406666 has 4 divisors (see below), whose sum is σ = 33201510610002. Its totient is φ = 11067170203332.

The previous prime is 22134340406641. The next prime is 22134340406669. The reversal of 22134340406666 is 66660404343122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17910374164225 + 4223966242441 = 4232065^2 + 2055229^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22134340406666.

It is not an unprimeable number, because it can be changed into a prime (22134340406669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5533585101665 + ... + 5533585101668.

Almost surely, 2^{22134340406666} is an apocalyptic number.

22134340406666 is a deficient number, since it is larger than the sum of its proper divisors (11067170203336).

22134340406666 is a wasteful number, since it uses less digits than its factorization.

22134340406666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11067170203335.

The product of its (nonzero) digits is 2985984, while the sum is 47.

Adding to 22134340406666 its reverse (66660404343122), we get a palindrome (88794744749788).

The spelling of 22134340406666 in words is "twenty-two trillion, one hundred thirty-four billion, three hundred forty million, four hundred six thousand, six hundred sixty-six".