21211341432 has 32 divisors (see below), whose sum is σ = 53197792080. Its totient is φ = 7047855360.

The previous prime is 21211341419. The next prime is 21211341461. The reversal of 21211341432 is 23414311212.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 1404319 + ... + 1419342.

Almost surely, 2^21211341432 is an apocalyptic number.

It is an amenable number.

21211341432 is an abundant number, since it is smaller than the sum of its proper divisors (31986450648).

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

21211341432 is a wasteful number, since it uses less digits than its factorization.

21211341432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2823983 (or 2823979 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

Adding to 21211341432 its reverse (23414311212), we get a palindrome (44625652644).

The spelling of 21211341432 in words is "twenty-one billion, two hundred eleven million, three hundred forty-one thousand, four hundred thirty-two".