21302132242 has 8 divisors (see below), whose sum is σ = 31955152176. Its totient is φ = 10650414852.

The previous prime is 21302132233. The next prime is 21302132287. The reversal of 21302132242 is 24223120312.

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

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 3 ways as a sum of consecutive naturals, for example, 283668 + ... + 350815.

It is an arithmetic number, because the mean of its divisors is an integer number (3994394022).

Almost surely, 2^21302132242 is an apocalyptic number.

21302132242 is a deficient number, since it is larger than the sum of its proper divisors (10653019934).

21302132242 is a wasteful number, since it uses less digits than its factorization.

21302132242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651272.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21302132242 its reverse (24223120312), we get a palindrome (45525252554).

The spelling of 21302132242 in words is "twenty-one billion, three hundred two million, one hundred thirty-two thousand, two hundred forty-two".