2020201421 has 4 divisors (see below), whose sum is σ = 2308801632. Its totient is φ = 1731601212.

The previous prime is 2020201387. The next prime is 2020201439. The reversal of 2020201421 is 1241020202.

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 2020201421 - 2¹⁰ = 2020200397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020201396 and 2020201405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020201471) 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, 144300095 + ... + 144300108.

It is an arithmetic number, because the mean of its divisors is an integer number (577200408).

Almost surely, 2^2020201421 is an apocalyptic number.

It is an amenable number.

2020201421 is a deficient number, since it is larger than the sum of its proper divisors (288600211).

2020201421 is an equidigital number, since it uses as much as digits as its factorization.

2020201421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288600210.

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

The square root of 2020201421 is about 44946.6508318473. The cubic root of 2020201421 is about 1264.1488795838.

Adding to 2020201421 its reverse (1241020202), we get a palindrome (3261221623).

The spelling of 2020201421 in words is "two billion, twenty million, two hundred one thousand, four hundred twenty-one".