1212030321101 has 2 divisors, whose sum is σ = 1212030321102. Its totient is φ = 1212030321100.

The previous prime is 1212030321091. The next prime is 1212030321119. The reversal of 1212030321101 is 1011230302121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1178742318601 + 33288002500 = 1085699^2 + 182450^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212030321101 - 2¹⁴ = 1212030304717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212030321101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212030321181) 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, 606015160550 + 606015160551.

It is an arithmetic number, because the mean of its divisors is an integer number (606015160551).

Almost surely, 2^{1212030321101} is an apocalyptic number.

It is an amenable number.

1212030321101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212030321101 is an equidigital number, since it uses as much as digits as its factorization.

1212030321101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1212030321101 its reverse (1011230302121), we get a palindrome (2223260623222).

The spelling of 1212030321101 in words is "one trillion, two hundred twelve billion, thirty million, three hundred twenty-one thousand, one hundred one".