1327255780221 has 12 divisors (see below), whose sum is σ = 2191025415072. Its totient is φ = 758431874376.

The previous prime is 1327255780217. The next prime is 1327255780273. The reversal of 1327255780221 is 1220875527231.

It is a happy number.

1327255780221 is a `hidden beast` number, since 1 + 3 + 2 + 72 + 5 + 578 + 0 + 2 + 2 + 1 = 666.

It is not a de Polignac number, because 1327255780221 - 2² = 1327255780217 is a prime.

It is a super-2 number, since 2×1327255780221² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1327255780211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10533775971 + ... + 10533776096.

It is an arithmetic number, because the mean of its divisors is an integer number (182585451256).

Almost surely, 2^{1327255780221} is an apocalyptic number.

It is an amenable number.

1327255780221 is a deficient number, since it is larger than the sum of its proper divisors (863769634851).

1327255780221 is a wasteful number, since it uses less digits than its factorization.

1327255780221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21067552080 (or 21067552077 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 45.

The spelling of 1327255780221 in words is "one trillion, three hundred twenty-seven billion, two hundred fifty-five million, seven hundred eighty thousand, two hundred twenty-one".