2020102220221 has 16 divisors (see below), whose sum is σ = 2092346017200. Its totient is φ = 1948031769600.

The previous prime is 2020102220209. The next prime is 2020102220233. The reversal of 2020102220221 is 1220222010202.

It is an interprime number because it is at equal distance from previous prime (2020102220209) and next prime (2020102220233).

It can be written as a sum of positive squares in 8 ways, for example, as 10118348100 + 2009983872121 = 100590^2 + 1417739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020102220221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020102220195 and 2020102220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020102220821) 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, 198413751 + ... + 198423931.

It is an arithmetic number, because the mean of its divisors is an integer number (130771626075).

Almost surely, 2^{2020102220221} is an apocalyptic number.

It is an amenable number.

2020102220221 is a deficient number, since it is larger than the sum of its proper divisors (72243796979).

2020102220221 is a wasteful number, since it uses less digits than its factorization.

2020102220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18000.

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

Adding to 2020102220221 its reverse (1220222010202), we get a palindrome (3240324230423).

The spelling of 2020102220221 in words is "two trillion, twenty billion, one hundred two million, two hundred twenty thousand, two hundred twenty-one".