1222443123 has 48 divisors (see below), whose sum is σ = 1971323136. Its totient is φ = 666856960.

The previous prime is 1222443107. The next prime is 1222443133. The reversal of 1222443123 is 3213442221.

It is a happy number.

It is not a de Polignac number, because 1222443123 - 2⁴ = 1222443107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222443093 and 1222443102.

It is not an unprimeable number, because it can be changed into a prime (1222443133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 216565 + ... + 222137.

It is an arithmetic number, because the mean of its divisors is an integer number (41069232).

Almost surely, 2^1222443123 is an apocalyptic number.

1222443123 is a deficient number, since it is larger than the sum of its proper divisors (748880013).

1222443123 is a wasteful number, since it uses less digits than its factorization.

1222443123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5644 (or 5627 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

The square root of 1222443123 is about 34963.4541056801. The cubic root of 1222443123 is about 1069.2425194664.

Adding to 1222443123 its reverse (3213442221), we get a palindrome (4435885344).

The spelling of 1222443123 in words is "one billion, two hundred twenty-two million, four hundred forty-three thousand, one hundred twenty-three".