2231122213123 has 4 divisors (see below), whose sum is σ = 2236447087560. Its totient is φ = 2225797338688.

The previous prime is 2231122213097. The next prime is 2231122213127. The reversal of 2231122213123 is 3213122211322.

2231122213123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2231122213123 is a prime.

It is a super-3 number, since 3×2231122213123³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2231122213127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2662436590 + ... + 2662437427.

It is an arithmetic number, because the mean of its divisors is an integer number (559111771890).

Almost surely, 2^{2231122213123} is an apocalyptic number.

2231122213123 is a deficient number, since it is larger than the sum of its proper divisors (5324874437).

2231122213123 is an equidigital number, since it uses as much as digits as its factorization.

2231122213123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5324874436.

The product of its digits is 1728, while the sum is 25.

Adding to 2231122213123 its reverse (3213122211322), we get a palindrome (5444244424445).

The spelling of 2231122213123 in words is "two trillion, two hundred thirty-one billion, one hundred twenty-two million, two hundred thirteen thousand, one hundred twenty-three".