11023120121 has 4 divisors (see below), whose sum is σ = 11871052452. Its totient is φ = 10175187792.

The previous prime is 11023120109. The next prime is 11023120153. The reversal of 11023120121 is 12102132011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 593604496 + 10429515625 = 24364^2 + 102125^2 .

It is a cyclic number.

It is not a de Polignac number, because 11023120121 - 2²⁶ = 10956011257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11023120096 and 11023120105.

It is not an unprimeable number, because it can be changed into a prime (11023123121) 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, 423966146 + ... + 423966171.

It is an arithmetic number, because the mean of its divisors is an integer number (2967763113).

Almost surely, 2^11023120121 is an apocalyptic number.

It is an amenable number.

11023120121 is a deficient number, since it is larger than the sum of its proper divisors (847932331).

11023120121 is an equidigital number, since it uses as much as digits as its factorization.

11023120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847932330.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11023120121 its reverse (12102132011), we get a palindrome (23125252132).

The spelling of 11023120121 in words is "eleven billion, twenty-three million, one hundred twenty thousand, one hundred twenty-one".