1323221123 has 32 divisors (see below), whose sum is σ = 1627299840. Its totient is φ = 1050809760.

The previous prime is 1323221111. The next prime is 1323221131. The reversal of 1323221123 is 3211223231.

It is not a de Polignac number, because 1323221123 - 2¹⁰ = 1323220099 is a prime.

It is a super-2 number, since 2×1323221123² = 3501828280706762258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1323221095 and 1323221104.

It is not an unprimeable number, because it can be changed into a prime (1323221023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1452038 + ... + 1452948.

It is an arithmetic number, because the mean of its divisors is an integer number (50853120).

Almost surely, 2^1323221123 is an apocalyptic number.

1323221123 is a deficient number, since it is larger than the sum of its proper divisors (304078717).

1323221123 is a wasteful number, since it uses less digits than its factorization.

1323221123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167.

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

The square root of 1323221123 is about 36376.1064848892. The cubic root of 1323221123 is about 1097.8528703448.

Adding to 1323221123 its reverse (3211223231), we get a palindrome (4534444354).

The spelling of 1323221123 in words is "one billion, three hundred twenty-three million, two hundred twenty-one thousand, one hundred twenty-three".