11121231103 has 2 divisors, whose sum is σ = 11121231104. Its totient is φ = 11121231102.

The previous prime is 11121231089. The next prime is 11121231151. The reversal of 11121231103 is 30113212111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11121231103 - 2⁹ = 11121230591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11121231403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560615551 + 5560615552.

It is an arithmetic number, because the mean of its divisors is an integer number (5560615552).

Almost surely, 2^11121231103 is an apocalyptic number.

11121231103 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121231103 is an equidigital number, since it uses as much as digits as its factorization.

11121231103 is an evil number, because the sum of its binary digits is even.

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

Adding to 11121231103 its reverse (30113212111), we get a palindrome (41234443214).

The spelling of 11121231103 in words is "eleven billion, one hundred twenty-one million, two hundred thirty-one thousand, one hundred three".