1323120202110 has 160 divisors (see below), whose sum is σ = 4077493877952. Its totient is φ = 301570283520.

The previous prime is 1323120202099. The next prime is 1323120202123. The reversal of 1323120202110 is 112020213231.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1670980 + ... + 2332040.

Almost surely, 2^{1323120202110} is an apocalyptic number.

1323120202110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323120202110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2038746938976).

1323120202110 is an abundant number, since it is smaller than the sum of its proper divisors (2754373675842).

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

1323120202110 is a wasteful number, since it uses less digits than its factorization.

1323120202110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661440 (or 661431 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1323120202110 its reverse (112020213231), we get a palindrome (1435140415341).

The spelling of 1323120202110 in words is "one trillion, three hundred twenty-three billion, one hundred twenty million, two hundred two thousand, one hundred ten".