1211020207 has 2 divisors, whose sum is σ = 1211020208. Its totient is φ = 1211020206.

The previous prime is 1211020183. The next prime is 1211020229. The reversal of 1211020207 is 7020201121.

It is a strong prime.

It is an emirp because it is prime and its reverse (7020201121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1211020207 - 2¹⁹ = 1210495919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211020277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605510103 + 605510104.

It is an arithmetic number, because the mean of its divisors is an integer number (605510104).

Almost surely, 2^1211020207 is an apocalyptic number.

1211020207 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211020207 is an equidigital number, since it uses as much as digits as its factorization.

1211020207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 1211020207 is about 34799.7156166541. The cubic root of 1211020207 is about 1065.9016388234.

Adding to 1211020207 its reverse (7020201121), we get a palindrome (8231221328).

The spelling of 1211020207 in words is "one billion, two hundred eleven million, twenty thousand, two hundred seven".