2010211101221 has 4 divisors (see below), whose sum is σ = 2010381802572. Its totient is φ = 2010040399872.

The previous prime is 2010211101097. The next prime is 2010211101233. The reversal of 2010211101221 is 1221011120102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1175023480225 + 835187620996 = 1083985^2 + 913886^2 .

It is a cyclic number.

It is not a de Polignac number, because 2010211101221 - 2¹⁰ = 2010211100197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2010211101196 and 2010211101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010211100221) 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, 85333010 + ... + 85356563.

It is an arithmetic number, because the mean of its divisors is an integer number (502595450643).

Almost surely, 2^{2010211101221} is an apocalyptic number.

It is an amenable number.

2010211101221 is a deficient number, since it is larger than the sum of its proper divisors (170701351).

2010211101221 is a wasteful number, since it uses less digits than its factorization.

2010211101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170701350.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2010211101221 its reverse (1221011120102), we get a palindrome (3231222221323).

The spelling of 2010211101221 in words is "two trillion, ten billion, two hundred eleven million, one hundred one thousand, two hundred twenty-one".