1211001212207 has 2 divisors, whose sum is σ = 1211001212208. Its totient is φ = 1211001212206.

The previous prime is 1211001212147. The next prime is 1211001212263. The reversal of 1211001212207 is 7022121001121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1211001212207 - 2¹⁰ = 1211001211183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211051212207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605500606103 + 605500606104.

It is an arithmetic number, because the mean of its divisors is an integer number (605500606104).

Almost surely, 2^{1211001212207} is an apocalyptic number.

1211001212207 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211001212207 is an equidigital number, since it uses as much as digits as its factorization.

1211001212207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 1211001212207 its reverse (7022121001121), we get a palindrome (8233122213328).

The spelling of 1211001212207 in words is "one trillion, two hundred eleven billion, one million, two hundred twelve thousand, two hundred seven".