1222313123 has 4 divisors (see below), whose sum is σ = 1228455600. Its totient is φ = 1216170648.

The previous prime is 1222313119. The next prime is 1222313129. The reversal of 1222313123 is 3213132221.

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

It is a cyclic number.

It is not a de Polignac number, because 1222313123 - 2² = 1222313119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222313095 and 1222313104.

It is not an unprimeable number, because it can be changed into a prime (1222313129) 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 3 ways as a sum of consecutive naturals, for example, 3070940 + ... + 3071337.

It is an arithmetic number, because the mean of its divisors is an integer number (307113900).

Almost surely, 2^1222313123 is an apocalyptic number.

1222313123 is a deficient number, since it is larger than the sum of its proper divisors (6142477).

1222313123 is an equidigital number, since it uses as much as digits as its factorization.

1222313123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6142476.

The product of its digits is 432, while the sum is 20.

The square root of 1222313123 is about 34961.5949721977. The cubic root of 1222313123 is about 1069.2046154656.

Adding to 1222313123 its reverse (3213132221), we get a palindrome (4435445344).

The spelling of 1222313123 in words is "one billion, two hundred twenty-two million, three hundred thirteen thousand, one hundred twenty-three".