1115320141421 has 4 divisors (see below), whose sum is σ = 1115947785372. Its totient is φ = 1114692497472.

The previous prime is 1115320141393. The next prime is 1115320141471. The reversal of 1115320141421 is 1241410235111.

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 469788238921 + 645531902500 = 685411^2 + 803450^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115320141421 - 2²² = 1115315947117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115320141471) 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, 313819310 + ... + 313822863.

It is an arithmetic number, because the mean of its divisors is an integer number (278986946343).

Almost surely, 2^{1115320141421} is an apocalyptic number.

It is an amenable number.

1115320141421 is a deficient number, since it is larger than the sum of its proper divisors (627643951).

1115320141421 is an equidigital number, since it uses as much as digits as its factorization.

1115320141421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627643950.

The product of its (nonzero) digits is 960, while the sum is 26.

Adding to 1115320141421 its reverse (1241410235111), we get a palindrome (2356730376532).

The spelling of 1115320141421 in words is "one trillion, one hundred fifteen billion, three hundred twenty million, one hundred forty-one thousand, four hundred twenty-one".