2010221331221 has 4 divisors (see below), whose sum is σ = 2010425279532. Its totient is φ = 2010017382912.

The previous prime is 2010221331067. The next prime is 2010221331241. The reversal of 2010221331221 is 1221331220102.

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 658840656100 + 1351380675121 = 811690^2 + 1162489^2 .

It is a cyclic number.

It is not a de Polignac number, because 2010221331221 - 2¹⁴ = 2010221314837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2010221331193 and 2010221331202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010221331241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101959370 + ... + 101979083.

It is an arithmetic number, because the mean of its divisors is an integer number (502606319883).

Almost surely, 2^{2010221331221} is an apocalyptic number.

It is an amenable number.

2010221331221 is a deficient number, since it is larger than the sum of its proper divisors (203948311).

2010221331221 is an equidigital number, since it uses as much as digits as its factorization.

2010221331221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203948310.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2010221331221 its reverse (1221331220102), we get a palindrome (3231552551323).

The spelling of 2010221331221 in words is "two trillion, ten billion, two hundred twenty-one million, three hundred thirty-one thousand, two hundred twenty-one".