11442333421 has 2 divisors, whose sum is σ = 11442333422. Its totient is φ = 11442333420.

The previous prime is 11442333403. The next prime is 11442333433. The reversal of 11442333421 is 12433324411.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10958949225 + 483384196 = 104685^2 + 21986^2 .

It is a cyclic number.

It is not a de Polignac number, because 11442333421 - 2¹⁷ = 11442202349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11442333421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11442333491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5721166710 + 5721166711.

It is an arithmetic number, because the mean of its divisors is an integer number (5721166711).

Almost surely, 2^11442333421 is an apocalyptic number.

It is an amenable number.

11442333421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11442333421 is an equidigital number, since it uses as much as digits as its factorization.

11442333421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 28.

Adding to 11442333421 its reverse (12433324411), we get a palindrome (23875657832).

The spelling of 11442333421 in words is "eleven billion, four hundred forty-two million, three hundred thirty-three thousand, four hundred twenty-one".