303121303212 has 192 divisors, whose sum is σ = 886143283200. Its totient is φ = 78511749120.

The previous prime is 303121303157. The next prime is 303121303229. The reversal of 303121303212 is 212303121303.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 47890864 + ... + 47897192.

It is an arithmetic number, because the mean of its divisors is an integer number (4615329600).

Almost surely, 2^303121303212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 303121303212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (443071641600).

303121303212 is an abundant number, since it is smaller than the sum of its proper divisors (583021979988).

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

303121303212 is a wasteful number, since it uses less digits than its factorization.

303121303212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7136 (or 7134 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 303121303212 its reverse (212303121303), we get a palindrome (515424424515).

The spelling of 303121303212 in words is "three hundred three billion, one hundred twenty-one million, three hundred three thousand, two hundred twelve".