11134154221 has 2 divisors, whose sum is σ = 11134154222. Its totient is φ = 11134154220.

The previous prime is 11134154197. The next prime is 11134154243. The reversal of 11134154221 is 12245143111.

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., 6991300996 + 4142853225 = 83614^2 + 64365^2 .

It is a cyclic number.

It is not a de Polignac number, because 11134154221 - 2⁷ = 11134154093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11134154321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5567077110 + 5567077111.

It is an arithmetic number, because the mean of its divisors is an integer number (5567077111).

Almost surely, 2^11134154221 is an apocalyptic number.

It is an amenable number.

11134154221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11134154221 is an equidigital number, since it uses as much as digits as its factorization.

11134154221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 25.

Adding to 11134154221 its reverse (12245143111), we get a palindrome (23379297332).

The spelling of 11134154221 in words is "eleven billion, one hundred thirty-four million, one hundred fifty-four thousand, two hundred twenty-one".