1101243111215 has 16 divisors (see below), whose sum is σ = 1423167715200. Its totient is φ = 813212669952.

The previous prime is 1101243111191. The next prime is 1101243111217. The reversal of 1101243111215 is 5121113421011.

It is a cyclic number.

It is not a de Polignac number, because 1101243111215 - 2¹² = 1101243107119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101243111217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6265706 + ... + 6439064.

It is an arithmetic number, because the mean of its divisors is an integer number (88947982200).

Almost surely, 2^{1101243111215} is an apocalyptic number.

1101243111215 is a deficient number, since it is larger than the sum of its proper divisors (321924603985).

1101243111215 is a wasteful number, since it uses less digits than its factorization.

1101243111215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271106.

The product of its (nonzero) digits is 240, while the sum is 23.

Adding to 1101243111215 its reverse (5121113421011), we get a palindrome (6222356532226).

The spelling of 1101243111215 in words is "one trillion, one hundred one billion, two hundred forty-three million, one hundred eleven thousand, two hundred fifteen".