21141044 has 12 divisors (see below), whose sum is σ = 37092804. Its totient is φ = 10543104.

The previous prime is 21141041. The next prime is 21141061. The reversal of 21141044 is 44014112.

It can be written as a sum of positive squares in 2 ways, for example, as 10824100 + 10316944 = 3290^2 + 3212^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21141041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5069 + ... + 8244.

It is an arithmetic number, because the mean of its divisors is an integer number (3091067).

Almost surely, 2^21141044 is an apocalyptic number.

It is an amenable number.

21141044 is a deficient number, since it is larger than the sum of its proper divisors (15951760).

21141044 is a wasteful number, since it uses less digits than its factorization.

21141044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13714 (or 13712 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 21141044 is about 4597.9391035550. The cubic root of 21141044 is about 276.5087061407.

Adding to 21141044 its reverse (44014112), we get a palindrome (65155156).

The spelling of 21141044 in words is "twenty-one million, one hundred forty-one thousand, forty-four".