1321123242300 has 216 divisors, whose sum is σ = 4062731468544. Its totient is φ = 331396008960.

The previous prime is 1321123242293. The next prime is 1321123242301. The reversal of 1321123242300 is 32423211231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321123242301) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 239896147 + ... + 239901653.

It is an arithmetic number, because the mean of its divisors is an integer number (18808941984).

Almost surely, 2^{1321123242300} is an apocalyptic number.

1321123242300 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 1321123242300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2031365734272).

1321123242300 is an abundant number, since it is smaller than the sum of its proper divisors (2741608226244).

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

1321123242300 is a wasteful number, since it uses less digits than its factorization.

1321123242300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8325 (or 8301 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1321123242300 its reverse (32423211231), we get a palindrome (1353546453531).

The spelling of 1321123242300 in words is "one trillion, three hundred twenty-one billion, one hundred twenty-three million, two hundred forty-two thousand, three hundred".