1321022444103 has 20 divisors (see below), whose sum is σ = 2006826319080. Its totient is φ = 865754818992.

The previous prime is 1321022444089. The next prime is 1321022444113. The reversal of 1321022444103 is 3014442201231.

1321022444103 is a `hidden beast` number, since 1 + 3 + 2 + 1 + 0 + 2 + 244 + 410 + 3 = 666.

It is not a de Polignac number, because 1321022444103 - 2⁴ = 1321022444087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321022444113) 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 19 ways as a sum of consecutive naturals, for example, 138206400 + ... + 138215957.

It is an arithmetic number, because the mean of its divisors is an integer number (100341315954).

Almost surely, 2^{1321022444103} is an apocalyptic number.

1321022444103 is a deficient number, since it is larger than the sum of its proper divisors (685803874977).

1321022444103 is an equidigital number, since it uses as much as digits as its factorization.

1321022444103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276422428 (or 276422419 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 1321022444103 its reverse (3014442201231), we get a palindrome (4335464645334).

The spelling of 1321022444103 in words is "one trillion, three hundred twenty-one billion, twenty-two million, four hundred forty-four thousand, one hundred three".