1323011111020 has 24 divisors (see below), whose sum is σ = 2786717073168. Its totient is φ = 527605636800.

The previous prime is 1323011110999. The next prime is 1323011111039. The reversal of 1323011111020 is 201111103231.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1323011110985 and 1323011111003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99918691 + ... + 99931930.

It is an arithmetic number, because the mean of its divisors is an integer number (116113211382).

Almost surely, 2^{1323011111020} is an apocalyptic number.

1323011111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323011111020 is an abundant number, since it is smaller than the sum of its proper divisors (1463705962148).

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

1323011111020 is a wasteful number, since it uses less digits than its factorization.

1323011111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199850961 (or 199850959 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1323011111020 its reverse (201111103231), we get a palindrome (1524122214251).

The spelling of 1323011111020 in words is "one trillion, three hundred twenty-three billion, eleven million, one hundred eleven thousand, twenty".