21041441135 has 16 divisors (see below), whose sum is σ = 29664018720. Its totient is φ = 14125722240.

The previous prime is 21041441131. The next prime is 21041441147. The reversal of 21041441135 is 53114414012.

It is not a de Polignac number, because 21041441135 - 2² = 21041441131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21041441131) 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, 14713580 + ... + 14715009.

It is an arithmetic number, because the mean of its divisors is an integer number (1854001170).

Almost surely, 2^21041441135 is an apocalyptic number.

21041441135 is a deficient number, since it is larger than the sum of its proper divisors (8622577585).

21041441135 is a wasteful number, since it uses less digits than its factorization.

21041441135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29428618.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 21041441135 its reverse (53114414012), we get a palindrome (74155855147).

The spelling of 21041441135 in words is "twenty-one billion, forty-one million, four hundred forty-one thousand, one hundred thirty-five".