12120021007 has 2 divisors, whose sum is σ = 12120021008. Its totient is φ = 12120021006.

The previous prime is 12120020993. The next prime is 12120021013. The reversal of 12120021007 is 70012002121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12120021007 - 2⁷ = 12120020879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12120021037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060010503 + 6060010504.

It is an arithmetic number, because the mean of its divisors is an integer number (6060010504).

Almost surely, 2^12120021007 is an apocalyptic number.

12120021007 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120021007 is an equidigital number, since it uses as much as digits as its factorization.

12120021007 is an evil number, because the sum of its binary digits is even.

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

Adding to 12120021007 its reverse (70012002121), we get a palindrome (82132023128).

The spelling of 12120021007 in words is "twelve billion, one hundred twenty million, twenty-one thousand, seven".