1123110215215 has 4 divisors (see below), whose sum is σ = 1347732258264. Its totient is φ = 898488172168.

The previous prime is 1123110215207. The next prime is 1123110215251. The reversal of 1123110215215 is 5125120113211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1123110215215 - 2³ = 1123110215207 is a prime.

It is a super-2 number, since 2×1123110215215² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1123110215215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112311021517 + ... + 112311021526.

It is an arithmetic number, because the mean of its divisors is an integer number (336933064566).

Almost surely, 2^{1123110215215} is an apocalyptic number.

1123110215215 is a deficient number, since it is larger than the sum of its proper divisors (224622043049).

1123110215215 is an equidigital number, since it uses as much as digits as its factorization.

1123110215215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224622043048.

The product of its (nonzero) digits is 600, while the sum is 25.

Adding to 1123110215215 its reverse (5125120113211), we get a palindrome (6248230328426).

The spelling of 1123110215215 in words is "one trillion, one hundred twenty-three billion, one hundred ten million, two hundred fifteen thousand, two hundred fifteen".