1211012133017 has 2 divisors, whose sum is σ = 1211012133018. Its totient is φ = 1211012133016.

The previous prime is 1211012132963. The next prime is 1211012133047. The reversal of 1211012133017 is 7103312101121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1093814772736 + 117197360281 = 1045856^2 + 342341^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211012133017 - 2²⁰ = 1211011084441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1211012132983 and 1211012133001.

It is not a weakly prime, because it can be changed into another prime (1211012133047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605506066508 + 605506066509.

It is an arithmetic number, because the mean of its divisors is an integer number (605506066509).

Almost surely, 2^{1211012133017} is an apocalyptic number.

It is an amenable number.

1211012133017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211012133017 is an equidigital number, since it uses as much as digits as its factorization.

1211012133017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 23.

Adding to 1211012133017 its reverse (7103312101121), we get a palindrome (8314324234138).

The spelling of 1211012133017 in words is "one trillion, two hundred eleven billion, twelve million, one hundred thirty-three thousand, seventeen".