1223231111122 has 4 divisors (see below), whose sum is σ = 1834846666686. Its totient is φ = 611615555560.

The previous prime is 1223231111111. The next prime is 1223231111159. The reversal of 1223231111122 is 2211111323221.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1195565109561 + 27666001561 = 1093419^2 + 166331^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1223231111093 and 1223231111102.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305807777779 + ... + 305807777782.

Almost surely, 2^{1223231111122} is an apocalyptic number.

1223231111122 is a deficient number, since it is larger than the sum of its proper divisors (611615555564).

1223231111122 is an equidigital number, since it uses as much as digits as its factorization.

1223231111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611615555563.

The product of its digits is 288, while the sum is 22.

Adding to 1223231111122 its reverse (2211111323221), we get a palindrome (3434342434343).

The spelling of 1223231111122 in words is "one trillion, two hundred twenty-three billion, two hundred thirty-one million, one hundred eleven thousand, one hundred twenty-two".