304212222145 has 16 divisors (see below), whose sum is σ = 394189809552. Its totient is φ = 224046731520.

The previous prime is 304212222121. The next prime is 304212222203. The reversal of 304212222145 is 541222212403.

It can be written as a sum of positive squares in 8 ways, for example, as 103673052289 + 200539169856 = 321983^2 + 447816^2 .

It is not a de Polignac number, because 304212222145 - 2²³ = 304203833537 is a prime.

It is a super-2 number, since 2×304212222145² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6249466 + ... + 6297955.

It is an arithmetic number, because the mean of its divisors is an integer number (24636863097).

Almost surely, 2^304212222145 is an apocalyptic number.

It is an amenable number.

304212222145 is a deficient number, since it is larger than the sum of its proper divisors (89977587407).

304212222145 is a wasteful number, since it uses less digits than its factorization.

304212222145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12547812.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 304212222145 its reverse (541222212403), we get a palindrome (845434434548).

The spelling of 304212222145 in words is "three hundred four billion, two hundred twelve million, two hundred twenty-two thousand, one hundred forty-five".