21152411332 has 12 divisors (see below), whose sum is σ = 39864159916. Its totient is φ = 9762651360.

The previous prime is 21152411299. The next prime is 21152411339. The reversal of 21152411332 is 23311425112.

It can be written as a sum of positive squares in 2 ways, for example, as 11929882176 + 9222529156 = 109224^2 + 96034^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21152411297 and 21152411306.

It is not an unprimeable number, because it can be changed into a prime (21152411339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203388519 + ... + 203388622.

Almost surely, 2^21152411332 is an apocalyptic number.

It is an amenable number.

21152411332 is a deficient number, since it is larger than the sum of its proper divisors (18711748584).

21152411332 is a wasteful number, since it uses less digits than its factorization.

21152411332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406777158 (or 406777156 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

Adding to 21152411332 its reverse (23311425112), we get a palindrome (44463836444).

The spelling of 21152411332 in words is "twenty-one billion, one hundred fifty-two million, four hundred eleven thousand, three hundred thirty-two".