21541121341 has 8 divisors (see below), whose sum is σ = 21572568000. Its totient is φ = 21509695680.

The previous prime is 21541121321. The next prime is 21541121363. The reversal of 21541121341 is 14312114512.

It is a happy number.

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 21541121341 - 2¹³ = 21541113149 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 (21541121321) 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, 3928840 + ... + 3934318.

It is an arithmetic number, because the mean of its divisors is an integer number (2696571000).

Almost surely, 2^21541121341 is an apocalyptic number.

It is an amenable number.

21541121341 is a deficient number, since it is larger than the sum of its proper divisors (31446659).

21541121341 is an equidigital number, since it uses as much as digits as its factorization.

21541121341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10499.

The product of its digits is 960, while the sum is 25.

Adding to 21541121341 its reverse (14312114512), we get a palindrome (35853235853).

The spelling of 21541121341 in words is "twenty-one billion, five hundred forty-one million, one hundred twenty-one thousand, three hundred forty-one".