21433242010 has 8 divisors (see below), whose sum is σ = 38579835636. Its totient is φ = 8573296800.

The previous prime is 21433241987. The next prime is 21433242023. The reversal of 21433242010 is 1024233412.

It can be written as a sum of positive squares in 2 ways, for example, as 20263807201 + 1169434809 = 142351^2 + 34197^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1071662091 + ... + 1071662110.

Almost surely, 2^21433242010 is an apocalyptic number.

21433242010 is a deficient number, since it is larger than the sum of its proper divisors (17146593626).

21433242010 is a wasteful number, since it uses less digits than its factorization.

21433242010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143324208.

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

Adding to 21433242010 its reverse (1024233412), we get a palindrome (22457475422).

The spelling of 21433242010 in words is "twenty-one billion, four hundred thirty-three million, two hundred forty-two thousand, ten".