211122131223 has 8 divisors (see below), whose sum is σ = 296311763200. Its totient is φ = 133340293368.

The previous prime is 211122131203. The next prime is 211122131251. The reversal of 211122131223 is 322131221112.

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

It is not a de Polignac number, because 211122131223 - 2¹² = 211122127127 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 211122131223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211122131203) 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, 1851948463 + ... + 1851948576.

It is an arithmetic number, because the mean of its divisors is an integer number (37038970400).

Almost surely, 2^211122131223 is an apocalyptic number.

211122131223 is a deficient number, since it is larger than the sum of its proper divisors (85189631977).

211122131223 is a wasteful number, since it uses less digits than its factorization.

211122131223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703897061.

The product of its digits is 288, while the sum is 21.

Adding to 211122131223 its reverse (322131221112), we get a palindrome (533253352335).

The spelling of 211122131223 in words is "two hundred eleven billion, one hundred twenty-two million, one hundred thirty-one thousand, two hundred twenty-three".