1213015207 has 2 divisors, whose sum is σ = 1213015208. Its totient is φ = 1213015206.

The previous prime is 1213015117. The next prime is 1213015267. The reversal of 1213015207 is 7025103121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213015207 - 2¹¹ = 1213013159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213015267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606507603 + 606507604.

It is an arithmetic number, because the mean of its divisors is an integer number (606507604).

Almost surely, 2^1213015207 is an apocalyptic number.

1213015207 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213015207 is an equidigital number, since it uses as much as digits as its factorization.

1213015207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 1213015207 is about 34828.3678486374. The cubic root of 1213015207 is about 1066.4866296511.

Adding to 1213015207 its reverse (7025103121), we get a palindrome (8238118328).

The spelling of 1213015207 in words is "one billion, two hundred thirteen million, fifteen thousand, two hundred seven".