21021122200202 has 8 divisors (see below), whose sum is σ = 31673080983936. Its totient is φ = 10463428538892.

The previous prime is 21021122200189. The next prime is 21021122200229. The reversal of 21021122200202 is 20200222112012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23566280048 + ... + 23566280939.

It is an arithmetic number, because the mean of its divisors is an integer number (3959135122992).

Almost surely, 2^{21021122200202} is an apocalyptic number.

21021122200202 is a deficient number, since it is larger than the sum of its proper divisors (10651958783734).

21021122200202 is a wasteful number, since it uses less digits than its factorization.

21021122200202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47132561212.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21021122200202 its reverse (20200222112012), we get a palindrome (41221344312214).

The spelling of 21021122200202 in words is "twenty-one trillion, twenty-one billion, one hundred twenty-two million, two hundred thousand, two hundred two".