211202312223 has 16 divisors (see below), whose sum is σ = 321842370816. Its totient is φ = 120683182080.

The previous prime is 211202312219. The next prime is 211202312227. The reversal of 211202312223 is 322213202112.

It is an interprime number because it is at equal distance from previous prime (211202312219) and next prime (211202312227).

It is not a de Polignac number, because 211202312223 - 2² = 211202312219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 211202312223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211202312227) 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, 595615 + ... + 881567.

It is an arithmetic number, because the mean of its divisors is an integer number (20115148176).

Almost surely, 2^211202312223 is an apocalyptic number.

211202312223 is a deficient number, since it is larger than the sum of its proper divisors (110640058593).

211202312223 is a wasteful number, since it uses less digits than its factorization.

211202312223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321134.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 211202312223 its reverse (322213202112), we get a palindrome (533415514335).

The spelling of 211202312223 in words is "two hundred eleven billion, two hundred two million, three hundred twelve thousand, two hundred twenty-three".