21010052255041 has 4 divisors (see below), whose sum is σ = 21023668622272. Its totient is φ = 20996435887812.

The previous prime is 21010052255033. The next prime is 21010052255077. The reversal of 21010052255041 is 14055225001012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21010052255041 - 2³ = 21010052255033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21010052255011) 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, 6808181301 + ... + 6808184386.

It is an arithmetic number, because the mean of its divisors is an integer number (5255917155568).

Almost surely, 2^{21010052255041} is an apocalyptic number.

It is an amenable number.

21010052255041 is a deficient number, since it is larger than the sum of its proper divisors (13616367231).

21010052255041 is a wasteful number, since it uses less digits than its factorization.

21010052255041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13616367230.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 21010052255041 its reverse (14055225001012), we get a palindrome (35065277256053).

The spelling of 21010052255041 in words is "twenty-one trillion, ten billion, fifty-two million, two hundred fifty-five thousand, forty-one".