1231123321222 has 8 divisors (see below), whose sum is σ = 1910363774400. Its totient is φ = 594335396424.

The previous prime is 1231123321163. The next prime is 1231123321223. The reversal of 1231123321222 is 2221233211321.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231123321223) 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, 10613132022 + ... + 10613132137.

It is an arithmetic number, because the mean of its divisors is an integer number (238795471800).

Almost surely, 2^{1231123321222} is an apocalyptic number.

1231123321222 is a deficient number, since it is larger than the sum of its proper divisors (679240453178).

1231123321222 is a wasteful number, since it uses less digits than its factorization.

1231123321222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21226264190.

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

Adding to 1231123321222 its reverse (2221233211321), we get a palindrome (3452356532543).

The spelling of 1231123321222 in words is "one trillion, two hundred thirty-one billion, one hundred twenty-three million, three hundred twenty-one thousand, two hundred twenty-two".