11033121109 has 4 divisors (see below), whose sum is σ = 11056747104. Its totient is φ = 11009495116.

The previous prime is 11033121107. The next prime is 11033121161. The reversal of 11033121109 is 90112133011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90112133011 = 199 ⋅452824789.

It is a cyclic number.

It is not a de Polignac number, because 11033121109 - 2¹ = 11033121107 is a prime.

It is a super-2 number, since 2×11033121109² (a number of 21 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 11033121109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11033121101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11812297 + ... + 11813230.

It is an arithmetic number, because the mean of its divisors is an integer number (2764186776).

Almost surely, 2^11033121109 is an apocalyptic number.

It is an amenable number.

11033121109 is a deficient number, since it is larger than the sum of its proper divisors (23625995).

11033121109 is an equidigital number, since it uses as much as digits as its factorization.

11033121109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23625994.

The product of its (nonzero) digits is 162, while the sum is 22.

The spelling of 11033121109 in words is "eleven billion, thirty-three million, one hundred twenty-one thousand, one hundred nine".