2111223110231 has 8 divisors (see below), whose sum is σ = 2177231238000. Its totient is φ = 2045906167360.

The previous prime is 2111223110203. The next prime is 2111223110237. The reversal of 2111223110231 is 1320113221112.

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-2111223110231 is a prime.

It is a super-2 number, since 2×2111223110231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111223110237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172790021 + ... + 172802238.

It is an arithmetic number, because the mean of its divisors is an integer number (272153904750).

Almost surely, 2^{2111223110231} is an apocalyptic number.

2111223110231 is a deficient number, since it is larger than the sum of its proper divisors (66008127769).

2111223110231 is a wasteful number, since it uses less digits than its factorization.

2111223110231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345592449.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 2111223110231 its reverse (1320113221112), we get a palindrome (3431336331343).

The spelling of 2111223110231 in words is "two trillion, one hundred eleven billion, two hundred twenty-three million, one hundred ten thousand, two hundred thirty-one".