12020220001 has 2 divisors, whose sum is σ = 12020220002. Its totient is φ = 12020220000.

The previous prime is 12020219989. The next prime is 12020220029. The reversal of 12020220001 is 10002202021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7402881600 + 4617338401 = 86040^2 + 67951^2 .

It is a cyclic number.

It is not a de Polignac number, because 12020220001 - 2²³ = 12011831393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12020220001.

It is not a weakly prime, because it can be changed into another prime (12020220031) 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, 6010110000 + 6010110001.

It is an arithmetic number, because the mean of its divisors is an integer number (6010110001).

Almost surely, 2^12020220001 is an apocalyptic number.

It is an amenable number.

12020220001 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020220001 is an equidigital number, since it uses as much as digits as its factorization.

12020220001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 12020220001 its reverse (10002202021), we get a palindrome (22022422022).

The spelling of 12020220001 in words is "twelve billion, twenty million, two hundred twenty thousand, one".