21212110000006 has 8 divisors (see below), whose sum is σ = 31818735313920. Its totient is φ = 10605864895368.

The previous prime is 21212109999991. The next prime is 21212110000021. The reversal of 21212110000006 is 60000001121212.

It is an interprime number because it is at equal distance from previous prime (21212109999991) and next prime (21212110000021).

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

It is a super-3 number, since 3×21212110000006³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 94912801 + ... + 95136028.

It is an arithmetic number, because the mean of its divisors is an integer number (3977341914240).

Almost surely, 2^{21212110000006} is an apocalyptic number.

21212110000006 is a deficient number, since it is larger than the sum of its proper divisors (10606625313914).

21212110000006 is a wasteful number, since it uses less digits than its factorization.

21212110000006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190104638.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21212110000006 its reverse (60000001121212), we get a palindrome (81212111121218).

The spelling of 21212110000006 in words is "twenty-one trillion, two hundred twelve billion, one hundred ten million, six", and thus it is an aban number.