1323111010220 has 48 divisors (see below), whose sum is σ = 2805462565920. Its totient is φ = 524118380544.

The previous prime is 1323111010217. The next prime is 1323111010231. The reversal of 1323111010220 is 220101113231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6223436 + ... + 6432524.

It is an arithmetic number, because the mean of its divisors is an integer number (58447136790).

Almost surely, 2^{1323111010220} is an apocalyptic number.

1323111010220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323111010220 is an abundant number, since it is smaller than the sum of its proper divisors (1482351555700).

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

1323111010220 is a wasteful number, since it uses less digits than its factorization.

1323111010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212162 (or 212160 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1323111010220 its reverse (220101113231), we get a palindrome (1543212123451).

The spelling of 1323111010220 in words is "one trillion, three hundred twenty-three billion, one hundred eleven million, ten thousand, two hundred twenty".