21141132 has 48 divisors (see below), whose sum is σ = 53932032. Its totient is φ = 6416640.

The previous prime is 21141103. The next prime is 21141137. The reversal of 21141132 is 23114112.

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

It is not an unprimeable number, because it can be changed into a prime (21141137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4653 + ... + 7995.

It is an arithmetic number, because the mean of its divisors is an integer number (1123584).

Almost surely, 2^21141132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21141132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26966016).

21141132 is an abundant number, since it is smaller than the sum of its proper divisors (32790900).

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

21141132 is a wasteful number, since it uses less digits than its factorization.

21141132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398 (or 3396 counting only the distinct ones).

The product of its digits is 48, while the sum is 15.

The square root of 21141132 is about 4597.9486730498. The cubic root of 21141132 is about 276.5090897977.

Adding to 21141132 its reverse (23114112), we get a palindrome (44255244).

The spelling of 21141132 in words is "twenty-one million, one hundred forty-one thousand, one hundred thirty-two".