1323011210100 has 144 divisors (see below), whose sum is σ = 3938114194560. Its totient is φ = 342720051200.

The previous prime is 1323011210077. The next prime is 1323011210113. The reversal of 1323011210100 is 10121103231.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1323011210100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2635081 + ... + 3096719.

It is an arithmetic number, because the mean of its divisors is an integer number (27348015240).

Almost surely, 2^{1323011210100} is an apocalyptic number.

1323011210100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323011210100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1969057097280).

1323011210100 is an abundant number, since it is smaller than the sum of its proper divisors (2615102984460).

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

1323011210100 is a wasteful number, since it uses less digits than its factorization.

1323011210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461930 (or 461923 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1323011210100 its reverse (10121103231), we get a palindrome (1333132313331).

The spelling of 1323011210100 in words is "one trillion, three hundred twenty-three billion, eleven million, two hundred ten thousand, one hundred".