21212211000122 has 8 divisors (see below), whose sum is σ = 31850685085536. Its totient is φ = 10595315971612.

The previous prime is 21212211000103. The next prime is 21212211000131. The reversal of 21212211000122 is 22100011221212.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21212211000122.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5394761768 + ... + 5394765699.

It is an arithmetic number, because the mean of its divisors is an integer number (3981335635692).

Almost surely, 2^{21212211000122} is an apocalyptic number.

21212211000122 is a deficient number, since it is larger than the sum of its proper divisors (10638474085414).

21212211000122 is a wasteful number, since it uses less digits than its factorization.

21212211000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10789528452.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21212211000122 its reverse (22100011221212), we get a palindrome (43312222221334).

The spelling of 21212211000122 in words is "twenty-one trillion, two hundred twelve billion, two hundred eleven million, one hundred twenty-two", and thus it is an aban number.