11011113001231 has 16 divisors (see below), whose sum is σ = 12707952825600. Its totient is φ = 9345393042048.

The previous prime is 11011113001117. The next prime is 11011113001241. The reversal of 11011113001231 is 13210031111011.

It is not a de Polignac number, because 11011113001231 - 2¹⁹ = 11011112476943 is a prime.

It is a super-2 number, since 2×11011113001231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011113001241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6024441 + ... + 7636498.

It is an arithmetic number, because the mean of its divisors is an integer number (794247051600).

Almost surely, 2^{11011113001231} is an apocalyptic number.

11011113001231 is a deficient number, since it is larger than the sum of its proper divisors (1696839824369).

11011113001231 is a wasteful number, since it uses less digits than its factorization.

11011113001231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13662078.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 11011113001231 its reverse (13210031111011), we get a palindrome (24221144112242).

The spelling of 11011113001231 in words is "eleven trillion, eleven billion, one hundred thirteen million, one thousand, two hundred thirty-one".