1111212240523 has 24 divisors (see below), whose sum is σ = 1410301867824. Its totient is φ = 865784505600.

The previous prime is 1111212240511. The next prime is 1111212240569. The reversal of 1111212240523 is 3250422121111.

It is a de Polignac number, because none of the positive numbers 2^k-1111212240523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111212240923) 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 23 ways as a sum of consecutive naturals, for example, 5010343 + ... + 5227423.

It is an arithmetic number, because the mean of its divisors is an integer number (58762577826).

Almost surely, 2^{1111212240523} is an apocalyptic number.

1111212240523 is a deficient number, since it is larger than the sum of its proper divisors (299089627301).

1111212240523 is a wasteful number, since it uses less digits than its factorization.

1111212240523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226603 (or 226596 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 1111212240523 its reverse (3250422121111), we get a palindrome (4361634361634).

The spelling of 1111212240523 in words is "one trillion, one hundred eleven billion, two hundred twelve million, two hundred forty thousand, five hundred twenty-three".