21322130366 has 8 divisors (see below), whose sum is σ = 31983815520. Its totient is φ = 10660858528.

The previous prime is 21322130363. The next prime is 21322130387. The reversal of 21322130366 is 66303122312.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322130363) 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, 145115 + ... + 252393.

It is an arithmetic number, because the mean of its divisors is an integer number (3997976940).

Almost surely, 2^21322130366 is an apocalyptic number.

21322130366 is a deficient number, since it is larger than the sum of its proper divisors (10661685154).

21322130366 is a wasteful number, since it uses less digits than its factorization.

21322130366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206658.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 21322130366 its reverse (66303122312), we get a palindrome (87625252678).

The spelling of 21322130366 in words is "twenty-one billion, three hundred twenty-two million, one hundred thirty thousand, three hundred sixty-six".