11233021121 has 6 divisors (see below), whose sum is σ = 13066983810. Its totient is φ = 9628303776.

The previous prime is 11233021117. The next prime is 11233021127. The reversal of 11233021121 is 12112033211.

It can be written as a sum of positive squares in only one way, i.e., 10359168400 + 873852721 = 101780^2 + 29561^2 .

It is not a de Polignac number, because 11233021121 - 2² = 11233021117 is a prime.

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 11233021121.

It is not an unprimeable number, because it can be changed into a prime (11233021127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 114622616 + ... + 114622713.

It is an arithmetic number, because the mean of its divisors is an integer number (2177830635).

Almost surely, 2^11233021121 is an apocalyptic number.

It is an amenable number.

11233021121 is a deficient number, since it is larger than the sum of its proper divisors (1833962689).

11233021121 is an equidigital number, since it uses as much as digits as its factorization.

11233021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229245343 (or 229245336 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11233021121 its reverse (12112033211), we get a palindrome (23345054332).

The spelling of 11233021121 in words is "eleven billion, two hundred thirty-three million, twenty-one thousand, one hundred twenty-one".