21001000200162 has 16 divisors (see below), whose sum is σ = 42003143784000. Its totient is φ = 7000142836112.

The previous prime is 21001000200161. The next prime is 21001000200203. The reversal of 21001000200162 is 26100200010012.

It is not an unprimeable number, because it can be changed into a prime (21001000200161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47402118 + ... + 47843105.

It is an arithmetic number, because the mean of its divisors is an integer number (2625196486500).

Almost surely, 2^{21001000200162} is an apocalyptic number.

21001000200162 is an abundant number, since it is smaller than the sum of its proper divisors (21002143583838).

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

21001000200162 is a wasteful number, since it uses less digits than its factorization.

21001000200162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95281977.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21001000200162 its reverse (26100200010012), we get a palindrome (47101200210174).

The spelling of 21001000200162 in words is "twenty-one trillion, one billion, two hundred thousand, one hundred sixty-two".