11221212233 has 8 divisors (see below), whose sum is σ = 13990082880. Its totient is φ = 8743801680.

The previous prime is 11221212229. The next prime is 11221212241. The reversal of 11221212233 is 33221212211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11221212233 - 2² = 11221212229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221212203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72864938 + ... + 72865091.

It is an arithmetic number, because the mean of its divisors is an integer number (1748760360).

Almost surely, 2^11221212233 is an apocalyptic number.

It is an amenable number.

11221212233 is a deficient number, since it is larger than the sum of its proper divisors (2768870647).

11221212233 is a wasteful number, since it uses less digits than its factorization.

11221212233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145730047.

The product of its digits is 288, while the sum is 20.

Adding to 11221212233 its reverse (33221212211), we get a palindrome (44442424444).

The spelling of 11221212233 in words is "eleven billion, two hundred twenty-one million, two hundred twelve thousand, two hundred thirty-three".