21111432332 has 24 divisors (see below), whose sum is σ = 37257990000. Its totient is φ = 10466426880.

The previous prime is 21111432313. The next prime is 21111432341. The reversal of 21111432332 is 23323411112.

It is a super-2 number, since 2×21111432332² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21111432298 and 21111432307.

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 7 ways as a sum of consecutive naturals, for example, 638348 + ... + 670604.

It is an arithmetic number, because the mean of its divisors is an integer number (1552416250).

Almost surely, 2^21111432332 is an apocalyptic number.

It is an amenable number.

21111432332 is a deficient number, since it is larger than the sum of its proper divisors (16146557668).

21111432332 is a wasteful number, since it uses less digits than its factorization.

21111432332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33641 (or 33639 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 21111432332 its reverse (23323411112), we get a palindrome (44434843444).

The spelling of 21111432332 in words is "twenty-one billion, one hundred eleven million, four hundred thirty-two thousand, three hundred thirty-two".