21424321132 has 12 divisors (see below), whose sum is σ = 37494882880. Its totient is φ = 10711497456.

The previous prime is 21424321099. The next prime is 21424321201. The reversal of 21424321132 is 23112342412.

It is a super-2 number, since 2×21424321132² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21424321097 and 21424321106.

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, 89148 + ... + 225379.

Almost surely, 2^21424321132 is an apocalyptic number.

It is an amenable number.

21424321132 is a deficient number, since it is larger than the sum of its proper divisors (16070561748).

21424321132 is a wasteful number, since it uses less digits than its factorization.

21424321132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331560 (or 331558 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

Adding to 21424321132 its reverse (23112342412), we get a palindrome (44536663544).

The spelling of 21424321132 in words is "twenty-one billion, four hundred twenty-four million, three hundred twenty-one thousand, one hundred thirty-two".