20202010011221 has 8 divisors (see below), whose sum is σ = 20234214733824. Its totient is φ = 20169807732000.

The previous prime is 20202010011217. The next prime is 20202010011223. The reversal of 20202010011221 is 12211001020202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20202010011221 - 2² = 20202010011217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20202010011196 and 20202010011205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202010011223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16311596 + ... + 17506346.

It is an arithmetic number, because the mean of its divisors is an integer number (2529276841728).

Almost surely, 2^{20202010011221} is an apocalyptic number.

It is an amenable number.

20202010011221 is a deficient number, since it is larger than the sum of its proper divisors (32204722603).

20202010011221 is a wasteful number, since it uses less digits than its factorization.

20202010011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221691.

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

Adding to 20202010011221 its reverse (12211001020202), we get a palindrome (32413011031423).

The spelling of 20202010011221 in words is "twenty trillion, two hundred two billion, ten million, eleven thousand, two hundred twenty-one".