1212011121103 has 2 divisors, whose sum is σ = 1212011121104. Its totient is φ = 1212011121102.

The previous prime is 1212011121091. The next prime is 1212011121119. The reversal of 1212011121103 is 3011211102121.

It is a happy number.

It is an a-pointer prime, because the next prime (1212011121119) can be obtained adding 1212011121103 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212011121103 - 2⁵ = 1212011121071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212011221103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606005560551 + 606005560552.

It is an arithmetic number, because the mean of its divisors is an integer number (606005560552).

Almost surely, 2^{1212011121103} is an apocalyptic number.

1212011121103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212011121103 is an equidigital number, since it uses as much as digits as its factorization.

1212011121103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1212011121103 its reverse (3011211102121), we get a palindrome (4223222223224).

The spelling of 1212011121103 in words is "one trillion, two hundred twelve billion, eleven million, one hundred twenty-one thousand, one hundred three".