11122230121 has 4 divisors (see below), whose sum is σ = 11150246212. Its totient is φ = 11094214032.

The previous prime is 11122230113. The next prime is 11122230139. The reversal of 11122230121 is 12103222111.

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 4139120896 + 6983109225 = 64336^2 + 83565^2 .

It is a cyclic number.

It is not a de Polignac number, because 11122230121 - 2³ = 11122230113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11122230095 and 11122230104.

It is not an unprimeable number, because it can be changed into a prime (11122230421) 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, 14007450 + ... + 14008243.

It is an arithmetic number, because the mean of its divisors is an integer number (2787561553).

Almost surely, 2^11122230121 is an apocalyptic number.

It is an amenable number.

11122230121 is a deficient number, since it is larger than the sum of its proper divisors (28016091).

11122230121 is an equidigital number, since it uses as much as digits as its factorization.

11122230121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28016090.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11122230121 its reverse (12103222111), we get a palindrome (23225452232).

The spelling of 11122230121 in words is "eleven billion, one hundred twenty-two million, two hundred thirty thousand, one hundred twenty-one".