321212263055120 has 20 divisors (see below), whose sum is σ = 746818511603340. Its totient is φ = 128484905222016.

The previous prime is 321212263055083. The next prime is 321212263055153. The reversal of 321212263055120 is 21550362212123.

It can be written as a sum of positive squares in 2 ways, for example, as 50480911320064 + 270731351735056 = 7104992^2 + 16453916^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2007576644015 + ... + 2007576644174.

It is an arithmetic number, because the mean of its divisors is an integer number (37340925580167).

Almost surely, 2^{321212263055120} is an apocalyptic number.

It is an amenable number.

321212263055120 is an abundant number, since it is smaller than the sum of its proper divisors (425606248548220).

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

321212263055120 is a wasteful number, since it uses less digits than its factorization.

321212263055120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4015153288202 (or 4015153288196 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 321212263055120 in words is "three hundred twenty-one trillion, two hundred twelve billion, two hundred sixty-three million, fifty-five thousand, one hundred twenty".