20200221002221 has 32 divisors (see below), whose sum is σ = 22499755229952. Its totient is φ = 18016924746240.

The previous prime is 20200221002209. The next prime is 20200221002317. The reversal of 20200221002221 is 12220012200202.

It is a cyclic number.

It is not a de Polignac number, because 20200221002221 - 2¹¹ = 20200221000173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20200221002195 and 20200221002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200221002921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54686811 + ... + 55054951.

It is an arithmetic number, because the mean of its divisors is an integer number (703117350936).

Almost surely, 2^{20200221002221} is an apocalyptic number.

It is an amenable number.

20200221002221 is a deficient number, since it is larger than the sum of its proper divisors (2299534227731).

20200221002221 is a wasteful number, since it uses less digits than its factorization.

20200221002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369253.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20200221002221 its reverse (12220012200202), we get a palindrome (32420233202423).

The spelling of 20200221002221 in words is "twenty trillion, two hundred billion, two hundred twenty-one million, two thousand, two hundred twenty-one".