11233022221 has 6 divisors (see below), whose sum is σ = 11932657130. Its totient is φ = 10572255936.

The previous prime is 11233022219. The next prime is 11233022287. The reversal of 11233022221 is 12222033211.

It can be written as a sum of positive squares in 3 ways, for example, as 5156819721 + 6076202500 = 71811^2 + 77950^2 .

It is not a de Polignac number, because 11233022221 - 2¹ = 11233022219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11233022621) 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, 19434006 + ... + 19434583.

Almost surely, 2^11233022221 is an apocalyptic number.

It is an amenable number.

11233022221 is a deficient number, since it is larger than the sum of its proper divisors (699634909).

11233022221 is an equidigital number, since it uses as much as digits as its factorization.

11233022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38868623 (or 38868606 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 11233022221 its reverse (12222033211), we get a palindrome (23455055432).

The spelling of 11233022221 in words is "eleven billion, two hundred thirty-three million, twenty-two thousand, two hundred twenty-one".