211321012323 has 16 divisors (see below), whose sum is σ = 294171204096. Its totient is φ = 134682387840.

The previous prime is 211321012237. The next prime is 211321012361. The reversal of 211321012323 is 323210123112.

It is not a de Polignac number, because 211321012323 - 2²⁰ = 211319963747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211321012323.

It is not an unprimeable number, because it can be changed into a prime (211321012373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 701638 + ... + 956523.

It is an arithmetic number, because the mean of its divisors is an integer number (18385700256).

Almost surely, 2^211321012323 is an apocalyptic number.

211321012323 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

211321012323 is a deficient number, since it is larger than the sum of its proper divisors (82850191773).

211321012323 is a wasteful number, since it uses less digits than its factorization.

211321012323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660034.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 211321012323 its reverse (323210123112), we get a palindrome (534531135435).

The spelling of 211321012323 in words is "two hundred eleven billion, three hundred twenty-one million, twelve thousand, three hundred twenty-three".