2020012221 has 24 divisors (see below), whose sum is σ = 2744719200. Its totient is φ = 1321403200.

The previous prime is 2020012217. The next prime is 2020012229. The reversal of 2020012221 is 1222100202.

It is not a de Polignac number, because 2020012221 - 2² = 2020012217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2020012197 and 2020012206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020012229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4559626 + ... + 4560068.

It is an arithmetic number, because the mean of its divisors is an integer number (114363300).

Almost surely, 2^2020012221 is an apocalyptic number.

It is an amenable number.

2020012221 is a deficient number, since it is larger than the sum of its proper divisors (724706979).

2020012221 is a wasteful number, since it uses less digits than its factorization.

2020012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797 (or 696 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2020012221 is about 44944.5460651234. The cubic root of 2020012221 is about 1264.1094141403.

Adding to 2020012221 its reverse (1222100202), we get a palindrome (3242112423).

The spelling of 2020012221 in words is "two billion, twenty million, twelve thousand, two hundred twenty-one".