11103221131 has 2 divisors, whose sum is σ = 11103221132. Its totient is φ = 11103221130.

The previous prime is 11103221081. The next prime is 11103221149. The reversal of 11103221131 is 13112230111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11103221131 - 2¹⁵ = 11103188363 is a prime.

It is a super-2 number, since 2×11103221131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11103224131) 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, 5551610565 + 5551610566.

It is an arithmetic number, because the mean of its divisors is an integer number (5551610566).

Almost surely, 2^11103221131 is an apocalyptic number.

11103221131 is a deficient number, since it is larger than the sum of its proper divisors (1).

11103221131 is an equidigital number, since it uses as much as digits as its factorization.

11103221131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11103221131 its reverse (13112230111), we get a palindrome (24215451242).

The spelling of 11103221131 in words is "eleven billion, one hundred three million, two hundred twenty-one thousand, one hundred thirty-one".