21210302332 has 6 divisors (see below), whose sum is σ = 37118029088. Its totient is φ = 10605151164.

The previous prime is 21210302329. The next prime is 21210302369. The reversal of 21210302332 is 23320301212.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 2651287788 + ... + 2651287795.

Almost surely, 2^21210302332 is an apocalyptic number.

It is an amenable number.

21210302332 is a deficient number, since it is larger than the sum of its proper divisors (15907726756).

21210302332 is a wasteful number, since it uses less digits than its factorization.

21210302332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5302575587 (or 5302575585 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21210302332 its reverse (23320301212), we get a palindrome (44530603544).

The spelling of 21210302332 in words is "twenty-one billion, two hundred ten million, three hundred two thousand, three hundred thirty-two".