2020045121 has 4 divisors (see below), whose sum is σ = 2020258500. Its totient is φ = 2019831744.

The previous prime is 2020045103. The next prime is 2020045129. The reversal of 2020045121 is 1215400202.

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 386672896 + 1633372225 = 19664^2 + 40415^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020045121 - 2³⁰ = 946303297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2020045121.

It is not an unprimeable number, because it can be changed into a prime (2020045129) 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, 91796 + ... + 111653.

It is an arithmetic number, because the mean of its divisors is an integer number (505064625).

Almost surely, 2^2020045121 is an apocalyptic number.

It is an amenable number.

2020045121 is a deficient number, since it is larger than the sum of its proper divisors (213379).

2020045121 is an equidigital number, since it uses as much as digits as its factorization.

2020045121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213378.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 2020045121 is about 44944.9120702221. The cubic root of 2020045121 is about 1264.1162769658.

Adding to 2020045121 its reverse (1215400202), we get a palindrome (3235445323).

The spelling of 2020045121 in words is "two billion, twenty million, forty-five thousand, one hundred twenty-one".