11211121233 has 24 divisors (see below), whose sum is σ = 17660289920. Its totient is φ = 6811814880.

The previous prime is 11211121199. The next prime is 11211121277. The reversal of 11211121233 is 33212111211.

It is not a de Polignac number, because 11211121233 - 2⁹ = 11211120721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11211101233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 597223 + ... + 615708.

Almost surely, 2^11211121233 is an apocalyptic number.

11211121233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11211121233 is a deficient number, since it is larger than the sum of its proper divisors (6449168687).

11211121233 is a wasteful number, since it uses less digits than its factorization.

11211121233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213029 (or 1213026 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 11211121233 its reverse (33212111211), we get a palindrome (44423232444).

The spelling of 11211121233 in words is "eleven billion, two hundred eleven million, one hundred twenty-one thousand, two hundred thirty-three".