1323211031100 has 432 divisors, whose sum is σ = 4872751123968. Its totient is φ = 293995630080.

The previous prime is 1323211031099. The next prime is 1323211031101. The reversal of 1323211031100 is 11301123231.

1323211031100 is a `hidden beast` number, since 1 + 32 + 321 + 1 + 0 + 311 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1323211031099) and next prime (1323211031101).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323211031101) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 337293739 + ... + 337297661.

Almost surely, 2^{1323211031100} is an apocalyptic number.

1323211031100 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 1323211031100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2436375561984).

1323211031100 is an abundant number, since it is smaller than the sum of its proper divisors (3549540092868).

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

1323211031100 is a wasteful number, since it uses less digits than its factorization.

1323211031100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5434 (or 5424 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1323211031100 its reverse (11301123231), we get a palindrome (1334512154331).

The spelling of 1323211031100 in words is "one trillion, three hundred twenty-three billion, two hundred eleven million, thirty-one thousand, one hundred".