1212001111133 has 2 divisors, whose sum is σ = 1212001111134. Its totient is φ = 1212001111132.

The previous prime is 1212001111043. The next prime is 1212001111163. The reversal of 1212001111133 is 3311111002121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1152524632249 + 59476478884 = 1073557^2 + 243878^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212001111133 - 2¹⁴ = 1212001094749 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212001111163) 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, 606000555566 + 606000555567.

It is an arithmetic number, because the mean of its divisors is an integer number (606000555567).

Almost surely, 2^{1212001111133} is an apocalyptic number.

It is an amenable number.

1212001111133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212001111133 is an equidigital number, since it uses as much as digits as its factorization.

1212001111133 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 17.

Adding to 1212001111133 its reverse (3311111002121), we get a palindrome (4523112113254).

The spelling of 1212001111133 in words is "one trillion, two hundred twelve billion, one million, one hundred eleven thousand, one hundred thirty-three".