21230003132 has 12 divisors (see below), whose sum is σ = 40010390616. Its totient is φ = 9798462960.

The previous prime is 21230003107. The next prime is 21230003147. The reversal of 21230003132 is 23130003212.

It is a self number, because there is not a number n which added to its sum of digits gives 21230003132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204134594 + ... + 204134697.

It is an arithmetic number, because the mean of its divisors is an integer number (3334199218).

Almost surely, 2^21230003132 is an apocalyptic number.

It is an amenable number.

21230003132 is a deficient number, since it is larger than the sum of its proper divisors (18780387484).

21230003132 is a wasteful number, since it uses less digits than its factorization.

21230003132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408269308 (or 408269306 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21230003132 its reverse (23130003212), we get a palindrome (44360006344).

The spelling of 21230003132 in words is "twenty-one billion, two hundred thirty million, three thousand, one hundred thirty-two".