21341132 has 24 divisors (see below), whose sum is σ = 38112480. Its totient is φ = 10454400.

The previous prime is 21341093. The next prime is 21341141. The reversal of 21341132 is 23114312.

It is a self number, because there is not a number n which added to its sum of digits gives 21341132.

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, 53558 + ... + 53954.

It is an arithmetic number, because the mean of its divisors is an integer number (1588020).

Almost surely, 2^21341132 is an apocalyptic number.

It is an amenable number.

21341132 is a deficient number, since it is larger than the sum of its proper divisors (16771348).

21341132 is a wasteful number, since it uses less digits than its factorization.

21341132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 639 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 21341132 is about 4619.6463068075. The cubic root of 21341132 is about 277.3783012071.

Adding to 21341132 its reverse (23114312), we get a palindrome (44455444).

The spelling of 21341132 in words is "twenty-one million, three hundred forty-one thousand, one hundred thirty-two".