1511121142243 has 8 divisors (see below), whose sum is σ = 1594432117520. Its totient is φ = 1428187995360.

The previous prime is 1511121142229. The next prime is 1511121142273. The reversal of 1511121142243 is 3422411211151.

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 1511121142243 - 2¹³ = 1511121134051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1511121142273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94448880 + ... + 94464877.

It is an arithmetic number, because the mean of its divisors is an integer number (199304014690).

Almost surely, 2^{1511121142243} is an apocalyptic number.

1511121142243 is a deficient number, since it is larger than the sum of its proper divisors (83310975277).

1511121142243 is a wasteful number, since it uses less digits than its factorization.

1511121142243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188914197.

The product of its digits is 1920, while the sum is 28.

Adding to 1511121142243 its reverse (3422411211151), we get a palindrome (4933532353394).

The spelling of 1511121142243 in words is "one trillion, five hundred eleven billion, one hundred twenty-one million, one hundred forty-two thousand, two hundred forty-three".