1211333222201 has 2 divisors, whose sum is σ = 1211333222202. Its totient is φ = 1211333222200.

The previous prime is 1211333222167. The next prime is 1211333222213. The reversal of 1211333222201 is 1022223331121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 855025704976 + 356307517225 = 924676^2 + 596915^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211333222201 - 2³⁰ = 1210259480377 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211333222291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605666611100 + 605666611101.

It is an arithmetic number, because the mean of its divisors is an integer number (605666611101).

Almost surely, 2^{1211333222201} is an apocalyptic number.

It is an amenable number.

1211333222201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211333222201 is an equidigital number, since it uses as much as digits as its factorization.

1211333222201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1211333222201 its reverse (1022223331121), we get a palindrome (2233556553322).

The spelling of 1211333222201 in words is "one trillion, two hundred eleven billion, three hundred thirty-three million, two hundred twenty-two thousand, two hundred one".