1323220553204 has 24 divisors (see below), whose sum is σ = 2560753106688. Its totient is φ = 593224655040.

The previous prime is 1323220553201. The next prime is 1323220553243. The reversal of 1323220553204 is 4023550223231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323220553201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205977572 + ... + 205983995.

It is an arithmetic number, because the mean of its divisors is an integer number (106698046112).

Almost surely, 2^{1323220553204} is an apocalyptic number.

It is an amenable number.

1323220553204 is a deficient number, since it is larger than the sum of its proper divisors (1237532553484).

1323220553204 is a wasteful number, since it uses less digits than its factorization.

1323220553204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411961655 (or 411961653 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 1323220553204 its reverse (4023550223231), we get a palindrome (5346770776435).

The spelling of 1323220553204 in words is "one trillion, three hundred twenty-three billion, two hundred twenty million, five hundred fifty-three thousand, two hundred four".