21010242332 has 12 divisors (see below), whose sum is σ = 38703078120. Its totient is φ = 9952220016.

The previous prime is 21010242317. The next prime is 21010242349. The reversal of 21010242332 is 23324201012.

It is a congruent number.

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, 138225203 + ... + 138225354.

It is an arithmetic number, because the mean of its divisors is an integer number (3225256510).

Almost surely, 2^21010242332 is an apocalyptic number.

It is an amenable number.

21010242332 is a deficient number, since it is larger than the sum of its proper divisors (17692835788).

21010242332 is a wasteful number, since it uses less digits than its factorization.

21010242332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276450580 (or 276450578 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21010242332 its reverse (23324201012), we get a palindrome (44334443344).

The spelling of 21010242332 in words is "twenty-one billion, ten million, two hundred forty-two thousand, three hundred thirty-two".