1211333012233 has 2 divisors, whose sum is σ = 1211333012234. Its totient is φ = 1211333012232.

The previous prime is 1211333012221. The next prime is 1211333012321. The reversal of 1211333012233 is 3322103331121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 698717107449 + 512615904784 = 835893^2 + 715972^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211333012233 - 2¹³ = 1211333004041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1211333012198 and 1211333012207.

It is not a weakly prime, because it can be changed into another prime (1211333012033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605666506116 + 605666506117.

It is an arithmetic number, because the mean of its divisors is an integer number (605666506117).

Almost surely, 2^{1211333012233} is an apocalyptic number.

It is an amenable number.

1211333012233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211333012233 is an equidigital number, since it uses as much as digits as its factorization.

1211333012233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1211333012233 its reverse (3322103331121), we get a palindrome (4533436343354).

The spelling of 1211333012233 in words is "one trillion, two hundred eleven billion, three hundred thirty-three million, twelve thousand, two hundred thirty-three".