10121221220201 has 16 divisors (see below), whose sum is σ = 12691923277824. Its totient is φ = 7856904878784.

The previous prime is 10121221220177. The next prime is 10121221220203. The reversal of 10121221220201 is 10202212212101.

It is not a de Polignac number, because 10121221220201 - 2¹⁴ = 10121221203817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10121221220201.

It is not an unprimeable number, because it can be changed into a prime (10121221220203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1049261321 + ... + 1049270966.

It is an arithmetic number, because the mean of its divisors is an integer number (793245204864).

Almost surely, 2^{10121221220201} is an apocalyptic number.

It is an amenable number.

10121221220201 is a deficient number, since it is larger than the sum of its proper divisors (2570702057623).

10121221220201 is a wasteful number, since it uses less digits than its factorization.

10121221220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098532360.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10121221220201 its reverse (10202212212101), we get a palindrome (20323433432302).

The spelling of 10121221220201 in words is "ten trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred twenty thousand, two hundred one".