21102202000001 has 4 divisors (see below), whose sum is σ = 21500356754772. Its totient is φ = 20704047245232.

The previous prime is 21102201999959. The next prime is 21102202000043. The reversal of 21102202000001 is 10000020220112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21102201999959) and next prime (21102202000043).

It can be written as a sum of positive squares in 2 ways, for example, as 10361349399025 + 10740852600976 = 3218905^2 + 3277324^2 .

It is a cyclic number.

It is not a de Polignac number, because 21102202000001 - 2³⁴ = 21085022130817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21102202009001) 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 3 ways as a sum of consecutive naturals, for example, 199077377306 + ... + 199077377411.

It is an arithmetic number, because the mean of its divisors is an integer number (5375089188693).

Almost surely, 2^{21102202000001} is an apocalyptic number.

It is an amenable number.

21102202000001 is a deficient number, since it is larger than the sum of its proper divisors (398154754771).

21102202000001 is an equidigital number, since it uses as much as digits as its factorization.

21102202000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398154754770.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21102202000001 its reverse (10000020220112), we get a palindrome (31102222220113).

The spelling of 21102202000001 in words is "twenty-one trillion, one hundred two billion, two hundred two million, one", and thus it is an aban number.