2010202011221 has 4 divisors (see below), whose sum is σ = 2010231623244. Its totient is φ = 2010172399200.

The previous prime is 2010202011121. The next prime is 2010202011229. The reversal of 2010202011221 is 1221102020102.

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 1988706346225 + 21495664996 = 1410215^2 + 146614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2010202011221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2010202011196 and 2010202011205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010202011229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14703950 + ... + 14840031.

It is an arithmetic number, because the mean of its divisors is an integer number (502557905811).

Almost surely, 2^{2010202011221} is an apocalyptic number.

It is an amenable number.

2010202011221 is a deficient number, since it is larger than the sum of its proper divisors (29612023).

2010202011221 is an equidigital number, since it uses as much as digits as its factorization.

2010202011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29612022.

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

Adding to 2010202011221 its reverse (1221102020102), we get a palindrome (3231304031323).

The spelling of 2010202011221 in words is "two trillion, ten billion, two hundred two million, eleven thousand, two hundred twenty-one".