21433100242 has 8 divisors (see below), whose sum is σ = 32150652876. Its totient is φ = 10716215952.

The previous prime is 21433100207. The next prime is 21433100257. The reversal of 21433100242 is 24200133412.

It can be written as a sum of positive squares in 2 ways, for example, as 16829613441 + 4603486801 = 129729^2 + 67849^2 .

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, 77253 + ... + 220984.

Almost surely, 2^21433100242 is an apocalyptic number.

21433100242 is a deficient number, since it is larger than the sum of its proper divisors (10717552634).

21433100242 is a wasteful number, since it uses less digits than its factorization.

21433100242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334172.

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

Adding to 21433100242 its reverse (24200133412), we get a palindrome (45633233654).

The spelling of 21433100242 in words is "twenty-one billion, four hundred thirty-three million, one hundred thousand, two hundred forty-two".