1321441401 has 16 divisors (see below), whose sum is σ = 2041211264. Its totient is φ = 744764544.

The previous prime is 1321441369. The next prime is 1321441403. The reversal of 1321441401 is 1041441231.

1321441401 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1321441401 - 2⁵ = 1321441369 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321441403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 429466 + ... + 432531.

It is an arithmetic number, because the mean of its divisors is an integer number (127575704).

Almost surely, 2^1321441401 is an apocalyptic number.

It is an amenable number.

1321441401 is a deficient number, since it is larger than the sum of its proper divisors (719769863).

1321441401 is an equidigital number, since it uses as much as digits as its factorization.

1321441401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862080.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1321441401 is about 36351.6354652717. The cubic root of 1321441401 is about 1097.3604483531.

Adding to 1321441401 its reverse (1041441231), we get a palindrome (2362882632).

It can be divided in two parts, 13214 and 41401, that added together give a triangular number (54615 = T₃₃₀).

The spelling of 1321441401 in words is "one billion, three hundred twenty-one million, four hundred forty-one thousand, four hundred one".