21054113341 has 4 divisors (see below), whose sum is σ = 21071941884. Its totient is φ = 21036284800.

The previous prime is 21054113309. The next prime is 21054113383. The reversal of 21054113341 is 14331145012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18927981241 + 2126132100 = 137579^2 + 46110^2 .

It is a cyclic number.

It is not a de Polignac number, because 21054113341 - 2⁵ = 21054113309 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 (21054173341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8912500 + ... + 8914861.

It is an arithmetic number, because the mean of its divisors is an integer number (5267985471).

Almost surely, 2^21054113341 is an apocalyptic number.

It is an amenable number.

21054113341 is a deficient number, since it is larger than the sum of its proper divisors (17828543).

21054113341 is a wasteful number, since it uses less digits than its factorization.

21054113341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17828542.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 21054113341 its reverse (14331145012), we get a palindrome (35385258353).

The spelling of 21054113341 in words is "twenty-one billion, fifty-four million, one hundred thirteen thousand, three hundred forty-one".