2020222121 has 4 divisors (see below), whose sum is σ = 2039836032. Its totient is φ = 2000608212.

The previous prime is 2020222117. The next prime is 2020222129. The reversal of 2020222121 is 1212220202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2020222121 - 2² = 2020222117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020222096 and 2020222105.

It is not an unprimeable number, because it can be changed into a prime (2020222129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9806801 + ... + 9807006.

It is an arithmetic number, because the mean of its divisors is an integer number (509959008).

Almost surely, 2^2020222121 is an apocalyptic number.

It is an amenable number.

2020222121 is a deficient number, since it is larger than the sum of its proper divisors (19613911).

2020222121 is a wasteful number, since it uses less digits than its factorization.

2020222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19613910.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2020222121 is about 44946.8811042546. The cubic root of 2020222121 is about 1264.1531972708.

Adding to 2020222121 its reverse (1212220202), we get a palindrome (3232442323).

The spelling of 2020222121 in words is "two billion, twenty million, two hundred twenty-two thousand, one hundred twenty-one".