21200122202 has 16 divisors (see below), whose sum is σ = 36354399360. Its totient is φ = 9082933488.

The previous prime is 21200122201. The next prime is 21200122247. The reversal of 21200122202 is 20222100212.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (21200122201) 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 7 ways as a sum of consecutive naturals, for example, 189278 + ... + 279689.

It is an arithmetic number, because the mean of its divisors is an integer number (2272149960).

Almost surely, 2^21200122202 is an apocalyptic number.

21200122202 is a deficient number, since it is larger than the sum of its proper divisors (15154277158).

21200122202 is a wasteful number, since it uses less digits than its factorization.

21200122202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472205.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21200122202 its reverse (20222100212), we get a palindrome (41422222414).

The spelling of 21200122202 in words is "twenty-one billion, two hundred million, one hundred twenty-two thousand, two hundred two".