211223122103231 has 8 divisors (see below), whose sum is σ = 241398619403904. Its totient is φ = 181047816195480.

The previous prime is 211223122103113. The next prime is 211223122103233. The reversal of 211223122103231 is 132301221322112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211223122103231 is a prime.

It is a super-2 number, since 2×211223122103231² (a number of 29 digits) contains 22 as substring.

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 211223122103231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211223122103233) 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, 45475505 + ... + 49904586.

It is an arithmetic number, because the mean of its divisors is an integer number (30174827425488).

Almost surely, 2^{211223122103231} is an apocalyptic number.

211223122103231 is a deficient number, since it is larger than the sum of its proper divisors (30175497300673).

211223122103231 is an equidigital number, since it uses as much as digits as its factorization.

211223122103231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95696461.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 211223122103231 its reverse (132301221322112), we get a palindrome (343524343425343).

The spelling of 211223122103231 in words is "two hundred eleven trillion, two hundred twenty-three billion, one hundred twenty-two million, one hundred three thousand, two hundred thirty-one".