10210121221211 has 4 divisors (see below), whose sum is σ = 10562194366800. Its totient is φ = 9858048075624.

The previous prime is 10210121221207. The next prime is 10210121221229. The reversal of 10210121221211 is 11212212101201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10210121221211 - 2² = 10210121221207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10210121221211.

It is not an unprimeable number, because it can be changed into a prime (10210121229211) 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, 176036572751 + ... + 176036572808.

It is an arithmetic number, because the mean of its divisors is an integer number (2640548591700).

Almost surely, 2^{10210121221211} is an apocalyptic number.

10210121221211 is a deficient number, since it is larger than the sum of its proper divisors (352073145589).

10210121221211 is an equidigital number, since it uses as much as digits as its factorization.

10210121221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352073145588.

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

Adding to 10210121221211 its reverse (11212212101201), we get a palindrome (21422333322412).

The spelling of 10210121221211 in words is "ten trillion, two hundred ten billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred eleven".