21050234041 has 16 divisors (see below), whose sum is σ = 22197452544. Its totient is φ = 19922957824.

The previous prime is 21050234039. The next prime is 21050234047. The reversal of 21050234041 is 14043205012.

It is a cyclic number.

It is not a de Polignac number, because 21050234041 - 2¹ = 21050234039 is a prime.

It is a super-2 number, since 2×21050234041² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21050234047) 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 15 ways as a sum of consecutive naturals, for example, 1597020 + ... + 1610146.

It is an arithmetic number, because the mean of its divisors is an integer number (1387340784).

Almost surely, 2^21050234041 is an apocalyptic number.

It is an amenable number.

21050234041 is a deficient number, since it is larger than the sum of its proper divisors (1147218503).

21050234041 is a wasteful number, since it uses less digits than its factorization.

21050234041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13880.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 21050234041 its reverse (14043205012), we get a palindrome (35093439053).

The spelling of 21050234041 in words is "twenty-one billion, fifty million, two hundred thirty-four thousand, forty-one".