11031112121 has 8 divisors (see below), whose sum is σ = 11090084544. Its totient is φ = 10972170160.

The previous prime is 11031112091. The next prime is 11031112129. The reversal of 11031112121 is 12121113011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11031112121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11031112096 and 11031112105.

It is not an unprimeable number, because it can be changed into a prime (11031112129) 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, 1336076 + ... + 1344306.

It is an arithmetic number, because the mean of its divisors is an integer number (1386260568).

Almost surely, 2^11031112121 is an apocalyptic number.

It is an amenable number.

11031112121 is a deficient number, since it is larger than the sum of its proper divisors (58972423).

11031112121 is an equidigital number, since it uses as much as digits as its factorization.

11031112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15231.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 11031112121 its reverse (12121113011), we get a palindrome (23152225132).

The spelling of 11031112121 in words is "eleven billion, thirty-one million, one hundred twelve thousand, one hundred twenty-one".