10121211220201 has 4 divisors (see below), whose sum is σ = 10653906547600. Its totient is φ = 9588515892804.

The previous prime is 10121211220187. The next prime is 10121211220279. The reversal of 10121211220201 is 10202211212101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10121211220201 - 2⁹ = 10121211219689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10121211220301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266347663671 + ... + 266347663708.

It is an arithmetic number, because the mean of its divisors is an integer number (2663476636900).

Almost surely, 2^{10121211220201} is an apocalyptic number.

It is an amenable number.

10121211220201 is a deficient number, since it is larger than the sum of its proper divisors (532695327399).

10121211220201 is an equidigital number, since it uses as much as digits as its factorization.

10121211220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532695327398.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10121211220201 its reverse (10202211212101), we get a palindrome (20323422432302).

It can be divided in two parts, 1012121 and 1220201, that added together give a palindrome (2232322).

The spelling of 10121211220201 in words is "ten trillion, one hundred twenty-one billion, two hundred eleven million, two hundred twenty thousand, two hundred one".