2020120221 has 16 divisors (see below), whose sum is σ = 3100428800. Its totient is φ = 1146048048.

The previous prime is 2020120213. The next prime is 2020120229. The reversal of 2020120221 is 1220210202.

It is an interprime number because it is at equal distance from previous prime (2020120213) and next prime (2020120229).

It is not a de Polignac number, because 2020120221 - 2³ = 2020120213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2020120197 and 2020120206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020120229) 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, 343111 + ... + 348948.

It is an arithmetic number, because the mean of its divisors is an integer number (193776800).

Almost surely, 2^2020120221 is an apocalyptic number.

2020120221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2020120221 is a deficient number, since it is larger than the sum of its proper divisors (1080308579).

2020120221 is a wasteful number, since it uses less digits than its factorization.

2020120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692208.

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

The square root of 2020120221 is about 44945.7475296607. The cubic root of 2020120221 is about 1264.1319422852.

Adding to 2020120221 its reverse (1220210202), we get a palindrome (3240330423).

The spelling of 2020120221 in words is "two billion, twenty million, one hundred twenty thousand, two hundred twenty-one".