1440202344121 has 2 divisors, whose sum is σ = 1440202344122. Its totient is φ = 1440202344120.

The previous prime is 1440202344079. The next prime is 1440202344131. The reversal of 1440202344121 is 1214432020441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1102896935721 + 337305408400 = 1050189^2 + 580780^2 .

It is a cyclic number.

It is not a de Polignac number, because 1440202344121 - 2²³ = 1440193955513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1440202344121.

It is not a weakly prime, because it can be changed into another prime (1440202344131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720101172060 + 720101172061.

It is an arithmetic number, because the mean of its divisors is an integer number (720101172061).

Almost surely, 2^{1440202344121} is an apocalyptic number.

It is an amenable number.

1440202344121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440202344121 is an equidigital number, since it uses as much as digits as its factorization.

1440202344121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 1440202344121 its reverse (1214432020441), we get a palindrome (2654634364562).

The spelling of 1440202344121 in words is "one trillion, four hundred forty billion, two hundred two million, three hundred forty-four thousand, one hundred twenty-one".