12121111033 has 2 divisors, whose sum is σ = 12121111034. Its totient is φ = 12121111032.

The previous prime is 12121111019. The next prime is 12121111069. The reversal of 12121111033 is 33011112121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11953486224 + 167624809 = 109332^2 + 12947^2 .

It is a cyclic number.

It is not a de Polignac number, because 12121111033 - 2¹³ = 12121102841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12121110998 and 12121111016.

It is not a weakly prime, because it can be changed into another prime (12121117033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060555516 + 6060555517.

It is an arithmetic number, because the mean of its divisors is an integer number (6060555517).

Almost surely, 2^12121111033 is an apocalyptic number.

It is an amenable number.

12121111033 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121111033 is an equidigital number, since it uses as much as digits as its factorization.

12121111033 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 16.

Adding to 12121111033 its reverse (33011112121), we get a palindrome (45132223154).

The spelling of 12121111033 in words is "twelve billion, one hundred twenty-one million, one hundred eleven thousand, thirty-three".