1323001042220 has 96 divisors (see below), whose sum is σ = 3296337097536. Its totient is φ = 439687296000.

The previous prime is 1323001042183. The next prime is 1323001042289. The reversal of 1323001042220 is 222401003231.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1323001042192 and 1323001042201.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2001179 + ... + 2578898.

It is an arithmetic number, because the mean of its divisors is an integer number (34336844766).

Almost surely, 2^{1323001042220} is an apocalyptic number.

1323001042220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323001042220 is an abundant number, since it is smaller than the sum of its proper divisors (1973336055316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1323001042220 is a wasteful number, since it uses less digits than its factorization.

1323001042220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4580211 (or 4580209 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1323001042220 its reverse (222401003231), we get a palindrome (1545402045451).

The spelling of 1323001042220 in words is "one trillion, three hundred twenty-three billion, one million, forty-two thousand, two hundred twenty".