211323122011 has 8 divisors (see below), whose sum is σ = 223819939584. Its totient is φ = 198833642880.

The previous prime is 211323121979. The next prime is 211323122027. The reversal of 211323122011 is 110221323112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211323122011 - 2⁵ = 211323121979 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 211323122011.

It is not an unprimeable number, because it can be changed into a prime (211323122081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1775260 + ... + 1890553.

It is an arithmetic number, because the mean of its divisors is an integer number (27977492448).

Almost surely, 2^211323122011 is an apocalyptic number.

211323122011 is a deficient number, since it is larger than the sum of its proper divisors (12496817573).

211323122011 is a wasteful number, since it uses less digits than its factorization.

211323122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3669221.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 211323122011 its reverse (110221323112), we get a palindrome (321544445123).

The spelling of 211323122011 in words is "two hundred eleven billion, three hundred twenty-three million, one hundred twenty-two thousand, eleven".