21125341 has 8 divisors (see below), whose sum is σ = 21684960. Its totient is φ = 20568912.

The previous prime is 21125329. The next prime is 21125371. The reversal of 21125341 is 14352112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21125341 - 2¹¹ = 21123293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21125371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18495 + ... + 19603.

It is an arithmetic number, because the mean of its divisors is an integer number (2710620).

Almost surely, 2^21125341 is an apocalyptic number.

It is an amenable number.

21125341 is a deficient number, since it is larger than the sum of its proper divisors (559619).

21125341 is a wasteful number, since it uses less digits than its factorization.

21125341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595.

The product of its digits is 240, while the sum is 19.

The square root of 21125341 is about 4596.2311734725. The cubic root of 21125341 is about 276.4402281017.

Adding to 21125341 its reverse (14352112), we get a palindrome (35477453).

It can be divided in two parts, 211 and 25341, that added together give a palindrome (25552).

The spelling of 21125341 in words is "twenty-one million, one hundred twenty-five thousand, three hundred forty-one".