211121212000211 has 4 divisors (see below), whose sum is σ = 211176726390552. Its totient is φ = 211065697609872.

The previous prime is 211121212000201. The next prime is 211121212000229. The reversal of 211121212000211 is 112000212121112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211121212000211 - 2¹⁸ = 211121211738067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211121212000211.

It is not an unprimeable number, because it can be changed into a prime (211121212000201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27757189466 + ... + 27757197071.

It is an arithmetic number, because the mean of its divisors is an integer number (52794181597638).

Almost surely, 2^{211121212000211} is an apocalyptic number.

211121212000211 is a deficient number, since it is larger than the sum of its proper divisors (55514390341).

211121212000211 is an equidigital number, since it uses as much as digits as its factorization.

211121212000211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55514390340.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 211121212000211 its reverse (112000212121112), we get a palindrome (323121424121323).

The spelling of 211121212000211 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred twelve million, two hundred eleven", and thus it is an aban number.