1331241121 has 8 divisors (see below), whose sum is σ = 1550124864. Its totient is φ = 1119534000.

The previous prime is 1331241097. The next prime is 1331241133. The reversal of 1331241121 is 1211421331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1331241121 - 2⁷ = 1331240993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331241521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1793755 + ... + 1794496.

It is an arithmetic number, because the mean of its divisors is an integer number (193765608).

Almost surely, 2^1331241121 is an apocalyptic number.

It is an amenable number.

1331241121 is a deficient number, since it is larger than the sum of its proper divisors (218883743).

1331241121 is an equidigital number, since it uses as much as digits as its factorization.

1331241121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3588311.

The product of its digits is 144, while the sum is 19.

The square root of 1331241121 is about 36486.1771223021. The cubic root of 1331241121 is about 1100.0664205072.

Adding to 1331241121 its reverse (1211421331), we get a palindrome (2542662452).

It can be divided in two parts, 1331241 and 121, that multiplied together give a palindrome (161080161).

The spelling of 1331241121 in words is "one billion, three hundred thirty-one million, two hundred forty-one thousand, one hundred twenty-one".