212103240211 has 4 divisors (see below), whose sum is σ = 214085513592. Its totient is φ = 210120966832.

The previous prime is 212103240197. The next prime is 212103240221. The reversal of 212103240211 is 112042301212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212103240211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212103240221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 991136530 + ... + 991136743.

It is an arithmetic number, because the mean of its divisors is an integer number (53521378398).

Almost surely, 2^212103240211 is an apocalyptic number.

212103240211 is a deficient number, since it is larger than the sum of its proper divisors (1982273381).

212103240211 is a wasteful number, since it uses less digits than its factorization.

212103240211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982273380.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 212103240211 its reverse (112042301212), we get a palindrome (324145541423).

The spelling of 212103240211 in words is "two hundred twelve billion, one hundred three million, two hundred forty thousand, two hundred eleven".