1401220334209 has 2 divisors, whose sum is σ = 1401220334210. Its totient is φ = 1401220334208.

The previous prime is 1401220334207. The next prime is 1401220334219. The reversal of 1401220334209 is 9024330221041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 821147693584 + 580072640625 = 906172^2 + 761625^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401220334209 - 2¹ = 1401220334207 is a prime.

Together with 1401220334207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1401220334207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700610167104 + 700610167105.

It is an arithmetic number, because the mean of its divisors is an integer number (700610167105).

Almost surely, 2^{1401220334209} is an apocalyptic number.

It is an amenable number.

1401220334209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401220334209 is an equidigital number, since it uses as much as digits as its factorization.

1401220334209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 1401220334209 in words is "one trillion, four hundred one billion, two hundred twenty million, three hundred thirty-four thousand, two hundred nine".