1212303300320 has 144 divisors (see below), whose sum is σ = 3446555041440. Its totient is φ = 401314120704.

The previous prime is 1212303300317. The next prime is 1212303300323. The reversal of 1212303300320 is 230033032121.

It is an interprime number because it is at equal distance from previous prime (1212303300317) and next prime (1212303300323).

It is a super-2 number, since 2×1212303300320² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1212303300292 and 1212303300301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212303300323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2438684 + ... + 2893403.

It is an arithmetic number, because the mean of its divisors is an integer number (23934410010).

Almost surely, 2^{1212303300320} is an apocalyptic number.

1212303300320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212303300320 is an abundant number, since it is smaller than the sum of its proper divisors (2234251741120).

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

1212303300320 is a wasteful number, since it uses less digits than its factorization.

1212303300320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5332145 (or 5332130 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 1212303300320 its reverse (230033032121), we get a palindrome (1442336332441).

The spelling of 1212303300320 in words is "one trillion, two hundred twelve billion, three hundred three million, three hundred thousand, three hundred twenty".