12101211220001 has 2 divisors, whose sum is σ = 12101211220002. Its totient is φ = 12101211220000.

The previous prime is 12101211219997. The next prime is 12101211220039. The reversal of 12101211220001 is 10002211210121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6881466795025 + 5219744424976 = 2623255^2 + 2284676^2 .

It is a cyclic number.

It is not a de Polignac number, because 12101211220001 - 2² = 12101211219997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12101211220061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050605610000 + 6050605610001.

It is an arithmetic number, because the mean of its divisors is an integer number (6050605610001).

Almost surely, 2^{12101211220001} is an apocalyptic number.

It is an amenable number.

12101211220001 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101211220001 is an equidigital number, since it uses as much as digits as its factorization.

12101211220001 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 14.

Adding to 12101211220001 its reverse (10002211210121), we get a palindrome (22103422430122).

The spelling of 12101211220001 in words is "twelve trillion, one hundred one billion, two hundred eleven million, two hundred twenty thousand, one".