21211101000212 has 12 divisors (see below), whose sum is σ = 37285881580416. Its totient is φ = 10557991977240.

The previous prime is 21211101000211. The next prime is 21211101000319. The reversal of 21211101000212 is 21200010111212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21211101000211) by changing a digit.

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, 11889629714 + ... + 11889631497.

It is an arithmetic number, because the mean of its divisors is an integer number (3107156798368).

Almost surely, 2^{21211101000212} is an apocalyptic number.

It is an amenable number.

21211101000212 is a deficient number, since it is larger than the sum of its proper divisors (16074780580204).

21211101000212 is a wasteful number, since it uses less digits than its factorization.

21211101000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23779261438 (or 23779261436 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21211101000212 its reverse (21200010111212), we get a palindrome (42411111111424).

The spelling of 21211101000212 in words is "twenty-one trillion, two hundred eleven billion, one hundred one million, two hundred twelve", and thus it is an aban number.