1331214121 has 8 divisors (see below), whose sum is σ = 1454989824. Its totient is φ = 1212490560.

The previous prime is 1331214113. The next prime is 1331214139. The reversal of 1331214121 is 1214121331.

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 1331214121 - 2³ = 1331214113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331214161) 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 7 ways as a sum of consecutive naturals, for example, 1262485 + ... + 1263538.

It is an arithmetic number, because the mean of its divisors is an integer number (181873728).

Almost surely, 2^1331214121 is an apocalyptic number.

It is an amenable number.

1331214121 is a deficient number, since it is larger than the sum of its proper divisors (123775703).

1331214121 is a wasteful number, since it uses less digits than its factorization.

1331214121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526071.

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

The square root of 1331214121 is about 36485.8071172888. The cubic root of 1331214121 is about 1100.0589833386.

Adding to 1331214121 its reverse (1214121331), we get a palindrome (2545335452).

The spelling of 1331214121 in words is "one billion, three hundred thirty-one million, two hundred fourteen thousand, one hundred twenty-one".