211234123205 has 8 divisors (see below), whose sum is σ = 289692511872. Its totient is φ = 144846255888.

The previous prime is 211234123183. The next prime is 211234123211. The reversal of 211234123205 is 502321432112.

211234123205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 211234123205 - 2⁶ = 211234123141 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 3017630297 + ... + 3017630366.

It is an arithmetic number, because the mean of its divisors is an integer number (36211563984).

Almost surely, 2^211234123205 is an apocalyptic number.

It is an amenable number.

211234123205 is a deficient number, since it is larger than the sum of its proper divisors (78458388667).

211234123205 is an equidigital number, since it uses as much as digits as its factorization.

211234123205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6035260675.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 211234123205 its reverse (502321432112), we get a palindrome (713555555317).

The spelling of 211234123205 in words is "two hundred eleven billion, two hundred thirty-four million, one hundred twenty-three thousand, two hundred five".