10121221211201 has 2 divisors, whose sum is σ = 10121221211202. Its totient is φ = 10121221211200.

The previous prime is 10121221211131. The next prime is 10121221211209. The reversal of 10121221211201 is 10211212212101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10116222721201 + 4998490000 = 3180601^2 + 70700^2 .

It is a cyclic number.

It is not a de Polignac number, because 10121221211201 - 2²⁶ = 10121154102337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10121221211201.

It is not a weakly prime, because it can be changed into another prime (10121221211209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060610605600 + 5060610605601.

It is an arithmetic number, because the mean of its divisors is an integer number (5060610605601).

Almost surely, 2^{10121221211201} is an apocalyptic number.

It is an amenable number.

10121221211201 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121221211201 is an equidigital number, since it uses as much as digits as its factorization.

10121221211201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 10121221211201 its reverse (10211212212101), we get a palindrome (20332433423302).

The spelling of 10121221211201 in words is "ten trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred eleven thousand, two hundred one".