11033112121 has 4 divisors (see below), whose sum is σ = 11512812672. Its totient is φ = 10553411572.

The previous prime is 11033112059. The next prime is 11033112127. The reversal of 11033112121 is 12121133011.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 11033112121 - 2²³ = 11024723513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11033112095 and 11033112104.

It is not an unprimeable number, because it can be changed into a prime (11033112127) 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, 239850241 + ... + 239850286.

It is an arithmetic number, because the mean of its divisors is an integer number (2878203168).

Almost surely, 2^11033112121 is an apocalyptic number.

It is an amenable number.

11033112121 is a deficient number, since it is larger than the sum of its proper divisors (479700551).

11033112121 is an equidigital number, since it uses as much as digits as its factorization.

11033112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479700550.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11033112121 its reverse (12121133011), we get a palindrome (23154245132).

The spelling of 11033112121 in words is "eleven billion, thirty-three million, one hundred twelve thousand, one hundred twenty-one".