13212120085328 has 20 divisors (see below), whose sum is σ = 25598825487348. Its totient is φ = 6605971572480.

The previous prime is 13212120085319. The next prime is 13212120085427. The reversal of 13212120085328 is 82358002121231.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4478014641424 + 8734105443904 = 2116132^2 + 2955352^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13212120085291 and 13212120085300.

It is a congruent number.

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, 4288901 + ... + 6694692.

Almost surely, 2^{13212120085328} is an apocalyptic number.

It is an amenable number.

13212120085328 is a deficient number, since it is larger than the sum of its proper divisors (12386705402020).

13212120085328 is a wasteful number, since it uses less digits than its factorization.

13212120085328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11058782 (or 11058776 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The spelling of 13212120085328 in words is "thirteen trillion, two hundred twelve billion, one hundred twenty million, eighty-five thousand, three hundred twenty-eight".