1427221000321 has 2 divisors, whose sum is σ = 1427221000322. Its totient is φ = 1427221000320.

The previous prime is 1427221000301. The next prime is 1427221000349. The reversal of 1427221000321 is 1230001227241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1416959310321 + 10261690000 = 1190361^2 + 101300^2 .

It is a cyclic number.

It is not a de Polignac number, because 1427221000321 - 2¹³ = 1427220992129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1427221000301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713610500160 + 713610500161.

It is an arithmetic number, because the mean of its divisors is an integer number (713610500161).

Almost surely, 2^{1427221000321} is an apocalyptic number.

It is an amenable number.

1427221000321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427221000321 is an equidigital number, since it uses as much as digits as its factorization.

1427221000321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 1427221000321 its reverse (1230001227241), we get a palindrome (2657222227562).

The spelling of 1427221000321 in words is "one trillion, four hundred twenty-seven billion, two hundred twenty-one million, three hundred twenty-one", and thus it is an aban number.