1427221000320 has 128 divisors (see below), whose sum is σ = 4596167197440. Its totient is φ = 376668585984.

The previous prime is 1427221000301. The next prime is 1427221000321. The reversal of 1427221000320 is 230001227241.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1427221000321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3645432 + ... + 4017911.

It is an arithmetic number, because the mean of its divisors is an integer number (35907556230).

Almost surely, 2^{1427221000320} is an apocalyptic number.

1427221000320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1427221000320 is an abundant number, since it is smaller than the sum of its proper divisors (3168946197120).

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

1427221000320 is an equidigital number, since it uses as much as digits as its factorization.

1427221000320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7663462 (or 7663450 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

Adding to 1427221000320 its reverse (230001227241), we get a palindrome (1657222227561).

The spelling of 1427221000320 in words is "one trillion, four hundred twenty-seven billion, two hundred twenty-one million, three hundred twenty", and thus it is an aban number.