11220212233 has 4 divisors (see below), whose sum is σ = 11493875988. Its totient is φ = 10946548480.

The previous prime is 11220212231. The next prime is 11220212249. The reversal of 11220212233 is 33221202211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33221202211 = 233 ⋅142580267.

It can be written as a sum of positive squares in 2 ways, for example, as 1158517369 + 10061694864 = 34037^2 + 100308^2 .

It is a cyclic number.

It is not a de Polignac number, because 11220212233 - 2¹ = 11220212231 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 11220212233.

It is not an unprimeable number, because it can be changed into a prime (11220212231) 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, 136831816 + ... + 136831897.

It is an arithmetic number, because the mean of its divisors is an integer number (2873468997).

Almost surely, 2^11220212233 is an apocalyptic number.

It is an amenable number.

11220212233 is a deficient number, since it is larger than the sum of its proper divisors (273663755).

11220212233 is an equidigital number, since it uses as much as digits as its factorization.

11220212233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273663754.

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

Adding to 11220212233 its reverse (33221202211), we get a palindrome (44441414444).

The spelling of 11220212233 in words is "eleven billion, two hundred twenty million, two hundred twelve thousand, two hundred thirty-three".