21220201100202 has 64 divisors (see below), whose sum is σ = 47262444485760. Its totient is φ = 6310484953344.

The previous prime is 21220201100099. The next prime is 21220201100207. The reversal of 21220201100202 is 20200110202212.

It is not an unprimeable number, because it can be changed into a prime (21220201100207) 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 31 ways as a sum of consecutive naturals, for example, 38029677 + ... + 38583632.

It is an arithmetic number, because the mean of its divisors is an integer number (738475695090).

Almost surely, 2^{21220201100202} is an apocalyptic number.

21220201100202 is an abundant number, since it is smaller than the sum of its proper divisors (26042243385558).

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

21220201100202 is a wasteful number, since it uses less digits than its factorization.

21220201100202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76613447.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21220201100202 its reverse (20200110202212), we get a palindrome (41420311302414).

The spelling of 21220201100202 in words is "twenty-one trillion, two hundred twenty billion, two hundred one million, one hundred thousand, two hundred two".