1212300304100 has 72 divisors (see below), whose sum is σ = 2704055007528. Its totient is φ = 471477683200.

The previous prime is 1212300304099. The next prime is 1212300304129. The reversal of 1212300304100 is 14030032121.

It can be written as a sum of positive squares in 12 ways, for example, as 506636462656 + 705663841444 = 711784^2 + 840038^2 .

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, 696722 + ... + 1705878.

It is an arithmetic number, because the mean of its divisors is an integer number (37556319549).

Almost surely, 2^{1212300304100} is an apocalyptic number.

1212300304100 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 1212300304100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1352027503764).

1212300304100 is an abundant number, since it is smaller than the sum of its proper divisors (1491754703428).

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

1212300304100 is a wasteful number, since it uses less digits than its factorization.

1212300304100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009505 (or 1009498 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1212300304100 its reverse (14030032121), we get a palindrome (1226330336221).

The spelling of 1212300304100 in words is "one trillion, two hundred twelve billion, three hundred million, three hundred four thousand, one hundred".