11233222421 has 2 divisors, whose sum is σ = 11233222422. Its totient is φ = 11233222420.

The previous prime is 11233222393. The next prime is 11233222423. The reversal of 11233222421 is 12422233211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8176680625 + 3056541796 = 90425^2 + 55286^2 .

It is a cyclic number.

It is not a de Polignac number, because 11233222421 - 2²² = 11229028117 is a prime.

Together with 11233222423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11233222423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5616611210 + 5616611211.

It is an arithmetic number, because the mean of its divisors is an integer number (5616611211).

Almost surely, 2^11233222421 is an apocalyptic number.

It is an amenable number.

11233222421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11233222421 is an equidigital number, since it uses as much as digits as its factorization.

11233222421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 23.

Adding to 11233222421 its reverse (12422233211), we get a palindrome (23655455632).

The spelling of 11233222421 in words is "eleven billion, two hundred thirty-three million, two hundred twenty-two thousand, four hundred twenty-one".