1211233110103 has 2 divisors, whose sum is σ = 1211233110104. Its totient is φ = 1211233110102.

The previous prime is 1211233110097. The next prime is 1211233110127. The reversal of 1211233110103 is 3010113321121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211233110103 - 2⁹ = 1211233109591 is a prime.

It is a super-2 number, since 2×1211233110103² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211233110173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605616555051 + 605616555052.

It is an arithmetic number, because the mean of its divisors is an integer number (605616555052).

Almost surely, 2^{1211233110103} is an apocalyptic number.

1211233110103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211233110103 is an equidigital number, since it uses as much as digits as its factorization.

1211233110103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1211233110103 its reverse (3010113321121), we get a palindrome (4221346431224).

The spelling of 1211233110103 in words is "one trillion, two hundred eleven billion, two hundred thirty-three million, one hundred ten thousand, one hundred three".