121211220007 has 2 divisors, whose sum is σ = 121211220008. Its totient is φ = 121211220006.

The previous prime is 121211219993. The next prime is 121211220017. The reversal of 121211220007 is 700022112121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121211220007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121211220017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605610003 + 60605610004.

It is an arithmetic number, because the mean of its divisors is an integer number (60605610004).

Almost surely, 2^121211220007 is an apocalyptic number.

121211220007 is a deficient number, since it is larger than the sum of its proper divisors (1).

121211220007 is an equidigital number, since it uses as much as digits as its factorization.

121211220007 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 19.

Adding to 121211220007 its reverse (700022112121), we get a palindrome (821233332128).

The spelling of 121211220007 in words is "one hundred twenty-one billion, two hundred eleven million, two hundred twenty thousand, seven".