1330111121 has 4 divisors (see below), whose sum is σ = 1330244532. Its totient is φ = 1329977712.

The previous prime is 1330111109. The next prime is 1330111147. The reversal of 1330111121 is 1211110331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1211110331 = 19 ⋅63742649.

It can be written as a sum of positive squares in 2 ways, for example, as 771450625 + 558660496 = 27775^2 + 23636^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330111121 - 2¹⁰ = 1330110097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1330111096 and 1330111105.

It is not an unprimeable number, because it can be changed into a prime (1330111151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50426 + ... + 72131.

It is an arithmetic number, because the mean of its divisors is an integer number (332561133).

Almost surely, 2^1330111121 is an apocalyptic number.

It is an amenable number.

1330111121 is a deficient number, since it is larger than the sum of its proper divisors (133411).

1330111121 is a wasteful number, since it uses less digits than its factorization.

1330111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133410.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1330111121 is about 36470.6885183156. The cubic root of 1330111121 is about 1099.7550752214.

Adding to 1330111121 its reverse (1211110331), we get a palindrome (2541221452).

The spelling of 1330111121 in words is "one billion, three hundred thirty million, one hundred eleven thousand, one hundred twenty-one".