12121220707 has 2 divisors, whose sum is σ = 12121220708. Its totient is φ = 12121220706.

The previous prime is 12121220653. The next prime is 12121220717. The reversal of 12121220707 is 70702212121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12121220707 is a prime.

It is not a weakly prime, because it can be changed into another prime (12121220717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060610353 + 6060610354.

It is an arithmetic number, because the mean of its divisors is an integer number (6060610354).

Almost surely, 2^12121220707 is an apocalyptic number.

12121220707 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121220707 is an equidigital number, since it uses as much as digits as its factorization.

12121220707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 25.

Adding to 12121220707 its reverse (70702212121), we get a palindrome (82823432828).

The spelling of 12121220707 in words is "twelve billion, one hundred twenty-one million, two hundred twenty thousand, seven hundred seven".