1212303300 has 144 divisors (see below), whose sum is σ = 3865794240. Its totient is φ = 291432960.

The previous prime is 1212303283. The next prime is 1212303307. The reversal of 1212303300 is 33032121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1212303300.

It is not an unprimeable number, because it can be changed into a prime (1212303307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 164086 + ... + 171314.

Almost surely, 2^1212303300 is an apocalyptic number.

1212303300 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 1212303300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1932897120).

1212303300 is an abundant number, since it is smaller than the sum of its proper divisors (2653490940).

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

1212303300 is a wasteful number, since it uses less digits than its factorization.

1212303300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7302 (or 7295 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1212303300 is about 34818.1461310047. The cubic root of 1212303300 is about 1066.2779518947.

Adding to 1212303300 its reverse (33032121), we get a palindrome (1245335421).

The spelling of 1212303300 in words is "one billion, two hundred twelve million, three hundred three thousand, three hundred".