21132040024 has 32 divisors (see below), whose sum is σ = 39758796000. Its totient is φ = 10529759232.

The previous prime is 21132040021. The next prime is 21132040067. The reversal of 21132040024 is 42004023112.

It is a junction number, because it is equal to n+sod(n) for n = 21132039983 and 21132040010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132040021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3091042 + ... + 3097870.

It is an arithmetic number, because the mean of its divisors is an integer number (1242462375).

Almost surely, 2^21132040024 is an apocalyptic number.

It is an amenable number.

21132040024 is a deficient number, since it is larger than the sum of its proper divisors (18626755976).

21132040024 is a wasteful number, since it uses less digits than its factorization.

21132040024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8107 (or 8103 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21132040024 its reverse (42004023112), we get a palindrome (63136063136).

The spelling of 21132040024 in words is "twenty-one billion, one hundred thirty-two million, forty thousand, twenty-four".