21420303313132 has 24 divisors (see below), whose sum is σ = 37746852657920. Its totient is φ = 10635537416400.

The previous prime is 21420303313103. The next prime is 21420303313151. The reversal of 21420303313132 is 23131330302412.

It is a self number, because there is not a number n which added to its sum of digits gives 21420303313132.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4398282 + ... + 7885777.

Almost surely, 2^{21420303313132} is an apocalyptic number.

It is an amenable number.

21420303313132 is a deficient number, since it is larger than the sum of its proper divisors (16326549344788).

21420303313132 is a wasteful number, since it uses less digits than its factorization.

21420303313132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12287101 (or 12287099 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 21420303313132 its reverse (23131330302412), we get a palindrome (44551633615544).

The spelling of 21420303313132 in words is "twenty-one trillion, four hundred twenty billion, three hundred three million, three hundred thirteen thousand, one hundred thirty-two".