211311332123 has 16 divisors (see below), whose sum is σ = 213424865280. Its totient is φ = 209210018400.

The previous prime is 211311332041. The next prime is 211311332147. The reversal of 211311332123 is 321233113112.

It is a cyclic number.

It is not a de Polignac number, because 211311332123 - 2¹² = 211311328027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211311332153) 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 15 ways as a sum of consecutive naturals, for example, 74482661 + ... + 74485497.

It is an arithmetic number, because the mean of its divisors is an integer number (13339054080).

Almost surely, 2^211311332123 is an apocalyptic number.

211311332123 is a deficient number, since it is larger than the sum of its proper divisors (2113533157).

211311332123 is a wasteful number, since it uses less digits than its factorization.

211311332123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4738.

The product of its digits is 648, while the sum is 23.

Adding to 211311332123 its reverse (321233113112), we get a palindrome (532544445235).

The spelling of 211311332123 in words is "two hundred eleven billion, three hundred eleven million, three hundred thirty-two thousand, one hundred twenty-three".