303212211220 has 24 divisors (see below), whose sum is σ = 636824778408. Its totient is φ = 121269811200.

The previous prime is 303212211217. The next prime is 303212211223. The reversal of 303212211220 is 22112212303.

It is an interprime number because it is at equal distance from previous prime (303212211217) and next prime (303212211223).

It can be written as a sum of positive squares in 4 ways, for example, as 30907749636 + 272304461584 = 175806^2 + 521828^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303212211223) 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 7 ways as a sum of consecutive naturals, for example, 776421 + ... + 1099660.

It is an arithmetic number, because the mean of its divisors is an integer number (26534365767).

Almost surely, 2^303212211220 is an apocalyptic number.

It is an amenable number.

303212211220 is an abundant number, since it is smaller than the sum of its proper divisors (333612567188).

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

303212211220 is a wasteful number, since it uses less digits than its factorization.

303212211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884171 (or 1884169 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 303212211220 its reverse (22112212303), we get a palindrome (325324423523).

The spelling of 303212211220 in words is "three hundred three billion, two hundred twelve million, two hundred eleven thousand, two hundred twenty".