21500003050011 has 12 divisors (see below), whose sum is σ = 31085449830240. Its totient is φ = 14319540042480.

The previous prime is 21500003049979. The next prime is 21500003050093. The reversal of 21500003050011 is 11005030000512.

21500003050011 is a `hidden beast` number, since 2 + 150 + 0 + 0 + 0 + 3 + 0 + 500 + 11 = 666.

It is not a de Polignac number, because 21500003050011 - 2⁵ = 21500003049979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21500003054011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1149600480 + ... + 1149619181.

It is an arithmetic number, because the mean of its divisors is an integer number (2590454152520).

Almost surely, 2^{21500003050011} is an apocalyptic number.

21500003050011 is a deficient number, since it is larger than the sum of its proper divisors (9585446780229).

21500003050011 is a wasteful number, since it uses less digits than its factorization.

21500003050011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2299220706 (or 2299220703 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

Adding to 21500003050011 its reverse (11005030000512), we get a palindrome (32505033050523).

The spelling of 21500003050011 in words is "twenty-one trillion, five hundred billion, three million, fifty thousand, eleven".