1323220553123 has 8 divisors (see below), whose sum is σ = 1512262318848. Its totient is φ = 1134181351944.

The previous prime is 1323220553117. The next prime is 1323220553141. The reversal of 1323220553123 is 3213550223231.

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

It is a cyclic number.

It is not a de Polignac number, because 1323220553123 - 2³⁴ = 1306040683939 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1323220553123.

It is not an unprimeable number, because it can be changed into a prime (1323220559123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 633440 + ... + 1745762.

It is an arithmetic number, because the mean of its divisors is an integer number (189032789856).

Almost surely, 2^{1323220553123} is an apocalyptic number.

1323220553123 is a deficient number, since it is larger than the sum of its proper divisors (189041765725).

1323220553123 is a wasteful number, since it uses less digits than its factorization.

1323220553123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282273.

The product of its (nonzero) digits is 32400, while the sum is 32.

Adding to 1323220553123 its reverse (3213550223231), we get a palindrome (4536770776354).

The spelling of 1323220553123 in words is "one trillion, three hundred twenty-three billion, two hundred twenty million, five hundred fifty-three thousand, one hundred twenty-three".