21212010000211 has 8 divisors (see below), whose sum is σ = 22159509947424. Its totient is φ = 20266613273280.

The previous prime is 21212010000199. The next prime is 21212010000239. The reversal of 21212010000211 is 11200001021212.

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

It is a cyclic number.

It is not a de Polignac number, because 21212010000211 - 2²¹ = 21212007903059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21212010000191 and 21212010000200.

It is not an unprimeable number, because it can be changed into a prime (21212010007211) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 525784450 + ... + 525824791.

It is an arithmetic number, because the mean of its divisors is an integer number (2769938743428).

Almost surely, 2^{21212010000211} is an apocalyptic number.

21212010000211 is a deficient number, since it is larger than the sum of its proper divisors (947499947213).

21212010000211 is a wasteful number, since it uses less digits than its factorization.

21212010000211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051610141.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21212010000211 its reverse (11200001021212), we get a palindrome (32412011021423).

The spelling of 21212010000211 in words is "twenty-one trillion, two hundred twelve billion, ten million, two hundred eleven", and thus it is an aban number.