11421021233 has 2 divisors, whose sum is σ = 11421021234. Its totient is φ = 11421021232.

The previous prime is 11421021223. The next prime is 11421021257. The reversal of 11421021233 is 33212012411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10570307344 + 850713889 = 102812^2 + 29167^2 .

It is an emirp because it is prime and its reverse (33212012411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11421021233 - 2⁴ = 11421021217 is a prime.

It is not a weakly prime, because it can be changed into another prime (11421021223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5710510616 + 5710510617.

It is an arithmetic number, because the mean of its divisors is an integer number (5710510617).

Almost surely, 2^11421021233 is an apocalyptic number.

It is an amenable number.

11421021233 is a deficient number, since it is larger than the sum of its proper divisors (1).

11421021233 is an equidigital number, since it uses as much as digits as its factorization.

11421021233 is an evil number, because the sum of its binary digits is even.

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

Adding to 11421021233 its reverse (33212012411), we get a palindrome (44633033644).

The spelling of 11421021233 in words is "eleven billion, four hundred twenty-one million, twenty-one thousand, two hundred thirty-three".