21241032032432 has 40 divisors (see below), whose sum is σ = 43575700632912. Its totient is φ = 9995699916800.

The previous prime is 21241032032309. The next prime is 21241032032453. The reversal of 21241032032432 is 23423023014212.

It is a junction number, because it is equal to n+sod(n) for n = 21241032032395 and 21241032032404.

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, 46909832 + ... + 47360472.

Almost surely, 2^{21241032032432} is an apocalyptic number.

It is an amenable number.

21241032032432 is an abundant number, since it is smaller than the sum of its proper divisors (22334668600480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21241032032432 is a wasteful number, since it uses less digits than its factorization.

21241032032432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623957 (or 623951 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 21241032032432 its reverse (23423023014212), we get a palindrome (44664055046644).

The spelling of 21241032032432 in words is "twenty-one trillion, two hundred forty-one billion, thirty-two million, thirty-two thousand, four hundred thirty-two".