1401144223321 has 4 divisors (see below), whose sum is σ = 1401532033252. Its totient is φ = 1400756413392.

The previous prime is 1401144223301. The next prime is 1401144223373. The reversal of 1401144223321 is 1233224411041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24464400921 + 1376679822400 = 156411^2 + 1173320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401144223321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1401144223321.

It is not an unprimeable number, because it can be changed into a prime (1401144223301) 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 in 3 ways as a sum of consecutive naturals, for example, 193899546 + ... + 193906771.

It is an arithmetic number, because the mean of its divisors is an integer number (350383008313).

Almost surely, 2^{1401144223321} is an apocalyptic number.

It is an amenable number.

1401144223321 is a deficient number, since it is larger than the sum of its proper divisors (387809931).

1401144223321 is an equidigital number, since it uses as much as digits as its factorization.

1401144223321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387809930.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1401144223321 its reverse (1233224411041), we get a palindrome (2634368634362).

The spelling of 1401144223321 in words is "one trillion, four hundred one billion, one hundred forty-four million, two hundred twenty-three thousand, three hundred twenty-one".