1213303302100 has 72 divisors (see below), whose sum is σ = 2725270884000. Its totient is φ = 468308400000.

The previous prime is 1213303302083. The next prime is 1213303302139. The reversal of 1213303302100 is 12033033121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4803975 + ... + 5050225.

It is an arithmetic number, because the mean of its divisors is an integer number (37850984500).

Almost surely, 2^{1213303302100} is an apocalyptic number.

1213303302100 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 1213303302100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1362635442000).

1213303302100 is an abundant number, since it is smaller than the sum of its proper divisors (1511967581900).

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

1213303302100 is a wasteful number, since it uses less digits than its factorization.

1213303302100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247993 (or 247986 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 1213303302100 its reverse (12033033121), we get a palindrome (1225336335221).

The spelling of 1213303302100 in words is "one trillion, two hundred thirteen billion, three hundred three million, three hundred two thousand, one hundred".