121311007 has 2 divisors, whose sum is σ = 121311008. Its totient is φ = 121311006.

The previous prime is 121310989. The next prime is 121311017. The reversal of 121311007 is 700113121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121311007 - 2¹¹ = 121308959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121311017) 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, 60655503 + 60655504.

It is an arithmetic number, because the mean of its divisors is an integer number (60655504).

Almost surely, 2^121311007 is an apocalyptic number.

121311007 is a deficient number, since it is larger than the sum of its proper divisors (1).

121311007 is an equidigital number, since it uses as much as digits as its factorization.

121311007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 121311007 is about 11014.1276095749. The cubic root of 121311007 is about 495.0321470126.

Adding to 121311007 its reverse (700113121), we get a palindrome (821424128).

The spelling of 121311007 in words is "one hundred twenty-one million, three hundred eleven thousand, seven".