21000201010050 has 48 divisors (see below), whose sum is σ = 52087276504512. Its totient is φ = 5599324785600.

The previous prime is 21000201010003. The next prime is 21000201010051. The reversal of 21000201010050 is 5001010200012.

It is not an unprimeable number, because it can be changed into a prime (21000201010051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7953321 + ... + 10259420.

It is an arithmetic number, because the mean of its divisors is an integer number (1085151593844).

Almost surely, 2^{21000201010050} is an apocalyptic number.

21000201010050 is an abundant number, since it is smaller than the sum of its proper divisors (31087075494462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21000201010050 is a wasteful number, since it uses less digits than its factorization.

21000201010050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18220443 (or 18220438 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

Adding to 21000201010050 its reverse (5001010200012), we get a palindrome (26001211210062).

The spelling of 21000201010050 in words is "twenty-one trillion, two hundred one million, ten thousand, fifty".