1323012032220 has 24 divisors (see below), whose sum is σ = 3704433690384. Its totient is φ = 352803208576.

The previous prime is 1323012032203. The next prime is 1323012032231. The reversal of 1323012032220 is 222302103231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11025100209 + ... + 11025100328.

It is an arithmetic number, because the mean of its divisors is an integer number (154351403766).

Almost surely, 2^{1323012032220} is an apocalyptic number.

1323012032220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323012032220 is an abundant number, since it is smaller than the sum of its proper divisors (2381421658164).

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

1323012032220 is a wasteful number, since it uses less digits than its factorization.

1323012032220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22050200549 (or 22050200547 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 1323012032220 its reverse (222302103231), we get a palindrome (1545314135451).

The spelling of 1323012032220 in words is "one trillion, three hundred twenty-three billion, twelve million, thirty-two thousand, two hundred twenty".