11031031121 has 8 divisors (see below), whose sum is σ = 12036345984. Its totient is φ = 10026131920.

The previous prime is 11031031091. The next prime is 11031031129. The reversal of 11031031121 is 12113013011.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11031031121 - 2⁶ = 11031031057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11031031096 and 11031031105.

It is not an unprimeable number, because it can be changed into a prime (11031031129) 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, 47066 + ... + 155811.

It is an arithmetic number, because the mean of its divisors is an integer number (1504543248).

Almost surely, 2^11031031121 is an apocalyptic number.

11031031121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11031031121 is a deficient number, since it is larger than the sum of its proper divisors (1005314863).

11031031121 is a wasteful number, since it uses less digits than its factorization.

11031031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207831.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 11031031121 its reverse (12113013011), we get a palindrome (23144044132).

The spelling of 11031031121 in words is "eleven billion, thirty-one million, thirty-one thousand, one hundred twenty-one".