11131201229 has 2 divisors, whose sum is σ = 11131201230. Its totient is φ = 11131201228.

The previous prime is 11131201201. The next prime is 11131201241. The reversal of 11131201229 is 92210213111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11025420004 + 105781225 = 105002^2 + 10285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11131201229 is a prime.

It is a super-3 number, since 3×11131201229³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11131203229) 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, 5565600614 + 5565600615.

It is an arithmetic number, because the mean of its divisors is an integer number (5565600615).

Almost surely, 2^11131201229 is an apocalyptic number.

It is an amenable number.

11131201229 is a deficient number, since it is larger than the sum of its proper divisors (1).

11131201229 is an equidigital number, since it uses as much as digits as its factorization.

11131201229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 11131201229 in words is "eleven billion, one hundred thirty-one million, two hundred one thousand, two hundred twenty-nine".