21001022200202 has 16 divisors (see below), whose sum is σ = 34398006817824. Its totient is φ = 9536836470000.

The previous prime is 21001022200201. The next prime is 21001022200229. The reversal of 21001022200202 is 20200222010012.

It is not an unprimeable number, because it can be changed into a prime (21001022200201) 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, 454111949 + ... + 454158192.

It is an arithmetic number, because the mean of its divisors is an integer number (2149875426114).

Almost surely, 2^{21001022200202} is an apocalyptic number.

21001022200202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21001022200202 is a deficient number, since it is larger than the sum of its proper divisors (13396984617622).

21001022200202 is a wasteful number, since it uses less digits than its factorization.

21001022200202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908271205.

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

Adding to 21001022200202 its reverse (20200222010012), we get a palindrome (41201244210214).

The spelling of 21001022200202 in words is "twenty-one trillion, one billion, twenty-two million, two hundred thousand, two hundred two".