1323303012220 has 48 divisors (see below), whose sum is σ = 3362746484160. Its totient is φ = 427015425024.

The previous prime is 1323303012181. The next prime is 1323303012223. The reversal of 1323303012220 is 222103033231.

It is a super-2 number, since 2×1323303012220² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1323303012191 and 1323303012200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323303012223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278002455 + ... + 278007214.

It is an arithmetic number, because the mean of its divisors is an integer number (70057218420).

Almost surely, 2^{1323303012220} is an apocalyptic number.

1323303012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323303012220 is an abundant number, since it is smaller than the sum of its proper divisors (2039443471940).

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

1323303012220 is a wasteful number, since it uses less digits than its factorization.

1323303012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556009702 (or 556009700 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 1323303012220 its reverse (222103033231), we get a palindrome (1545406045451).

The spelling of 1323303012220 in words is "one trillion, three hundred twenty-three billion, three hundred three million, twelve thousand, two hundred twenty".