1321112141 has 4 divisors (see below), whose sum is σ = 1327818492. Its totient is φ = 1314405792.

The previous prime is 1321112131. The next prime is 1321112153. The reversal of 1321112141 is 1412111231.

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 622302916 + 698809225 = 24946^2 + 26435^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321112141 - 2⁶ = 1321112077 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 (1321112131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3352880 + ... + 3353273.

It is an arithmetic number, because the mean of its divisors is an integer number (331954623).

Almost surely, 2^1321112141 is an apocalyptic number.

It is an amenable number.

1321112141 is a deficient number, since it is larger than the sum of its proper divisors (6706351).

1321112141 is an equidigital number, since it uses as much as digits as its factorization.

1321112141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6706350.

The product of its digits is 48, while the sum is 17.

The square root of 1321112141 is about 36347.1063635057. The cubic root of 1321112141 is about 1097.2692986650.

Adding to 1321112141 its reverse (1412111231), we get a palindrome (2733223372).

It can be divided in two parts, 13211 and 12141, that added together give a palindrome (25352).

The spelling of 1321112141 in words is "one billion, three hundred twenty-one million, one hundred twelve thousand, one hundred forty-one".