21202243441101 has 24 divisors (see below), whose sum is σ = 32429632505400. Its totient is φ = 13302272249856.

The previous prime is 21202243441007. The next prime is 21202243441103. The reversal of 21202243441101 is 10114434220212.

21202243441101 is a `hidden beast` number, since 2 + 1 + 2 + 0 + 2 + 243 + 4 + 411 + 0 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 19069387656201 + 2132855784900 = 4366851^2 + 1460430^2 .

It is not a de Polignac number, because 21202243441101 - 2¹¹ = 21202243439053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202243441103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3844420 + ... + 7562013.

It is an arithmetic number, because the mean of its divisors is an integer number (1351234687725).

Almost surely, 2^{21202243441101} is an apocalyptic number.

It is an amenable number.

21202243441101 is a deficient number, since it is larger than the sum of its proper divisors (11227389064299).

21202243441101 is a wasteful number, since it uses less digits than its factorization.

21202243441101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11418605 (or 11418602 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 21202243441101 its reverse (10114434220212), we get a palindrome (31316677661313).

The spelling of 21202243441101 in words is "twenty-one trillion, two hundred two billion, two hundred forty-three million, four hundred forty-one thousand, one hundred one".