211212011112223 has 8 divisors (see below), whose sum is σ = 230413280688720. Its totient is φ = 192010771145280.

The previous prime is 211212011112203. The next prime is 211212011112241. The reversal of 211212011112223 is 322211110212112.

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

It is a cyclic number.

It is not a de Polignac number, because 211212011112223 - 2⁹ = 211212011111711 is a prime.

It is a super-2 number, since 2×211212011112223² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211212011112194 and 211212011112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211212011112203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9115033 + ... + 22483501.

It is an arithmetic number, because the mean of its divisors is an integer number (28801660086090).

Almost surely, 2^{211212011112223} is an apocalyptic number.

211212011112223 is a deficient number, since it is larger than the sum of its proper divisors (19201269576497).

211212011112223 is a wasteful number, since it uses less digits than its factorization.

211212011112223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14804777.

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 211212011112223 its reverse (322211110212112), we get a palindrome (533423121324335).

The spelling of 211212011112223 in words is "two hundred eleven trillion, two hundred twelve billion, eleven million, one hundred twelve thousand, two hundred twenty-three".