2020323121 has 4 divisors (see below), whose sum is σ = 2021677812. Its totient is φ = 2018968432.

The previous prime is 2020323113. The next prime is 2020323127. The reversal of 2020323121 is 1213230202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1309354225 + 710968896 = 36185^2 + 26664^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020323121 - 2³ = 2020323113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020323095 and 2020323104.

It is not an unprimeable number, because it can be changed into a prime (2020323127) 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, 675106 + ... + 678091.

It is an arithmetic number, because the mean of its divisors is an integer number (505419453).

Almost surely, 2^2020323121 is an apocalyptic number.

It is an amenable number.

2020323121 is a deficient number, since it is larger than the sum of its proper divisors (1354691).

2020323121 is a wasteful number, since it uses less digits than its factorization.

2020323121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354690.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2020323121 is about 44948.0046386934. The cubic root of 2020323121 is about 1264.1742638232.

Adding to 2020323121 its reverse (1213230202), we get a palindrome (3233553323).

The spelling of 2020323121 in words is "two billion, twenty million, three hundred twenty-three thousand, one hundred twenty-one".