11415304421 has 2 divisors, whose sum is σ = 11415304422. Its totient is φ = 11415304420.

The previous prime is 11415304403. The next prime is 11415304427. The reversal of 11415304421 is 12440351411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11371876321 + 43428100 = 106639^2 + 6590^2 .

It is an emirp because it is prime and its reverse (12440351411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11415304421 - 2¹⁸ = 11415042277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11415304427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5707652210 + 5707652211.

It is an arithmetic number, because the mean of its divisors is an integer number (5707652211).

Almost surely, 2^11415304421 is an apocalyptic number.

It is an amenable number.

11415304421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11415304421 is an equidigital number, since it uses as much as digits as its factorization.

11415304421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 11415304421 its reverse (12440351411), we get a palindrome (23855655832).

The spelling of 11415304421 in words is "eleven billion, four hundred fifteen million, three hundred four thousand, four hundred twenty-one".