21200022121102 has 8 divisors (see below), whose sum is σ = 34690945289112. Its totient is φ = 9636373691400.

The previous prime is 21200022121097. The next prime is 21200022121139. The reversal of 21200022121102 is 20112122000212.

It is a happy number.

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

It is a congruent number.

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, 481818684549 + ... + 481818684592.

It is an arithmetic number, because the mean of its divisors is an integer number (4336368161139).

Almost surely, 2^{21200022121102} is an apocalyptic number.

21200022121102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21200022121102 is a deficient number, since it is larger than the sum of its proper divisors (13490923168010).

21200022121102 is a wasteful number, since it uses less digits than its factorization.

21200022121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963637369154.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21200022121102 its reverse (20112122000212), we get a palindrome (41312144121314).

The spelling of 21200022121102 in words is "twenty-one trillion, two hundred billion, twenty-two million, one hundred twenty-one thousand, one hundred two".