2011020210221 has 16 divisors (see below), whose sum is σ = 2309353804800. Its totient is φ = 1731942903600.

The previous prime is 2011020210131. The next prime is 2011020210233. The reversal of 2011020210221 is 1220120201102.

It is a cyclic number.

It is not a de Polignac number, because 2011020210221 - 2¹⁰ = 2011020209197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011020210196 and 2011020210205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011020210271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16280390 + ... + 16403448.

It is an arithmetic number, because the mean of its divisors is an integer number (144334612800).

Almost surely, 2^{2011020210221} is an apocalyptic number.

It is an amenable number.

2011020210221 is a deficient number, since it is larger than the sum of its proper divisors (298333594579).

2011020210221 is a wasteful number, since it uses less digits than its factorization.

2011020210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201280.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2011020210221 its reverse (1220120201102), we get a palindrome (3231140411323).

The spelling of 2011020210221 in words is "two trillion, eleven billion, twenty million, two hundred ten thousand, two hundred twenty-one".