2021335421 has 8 divisors (see below), whose sum is σ = 2310471744. Its totient is φ = 1732292640.

The previous prime is 2021335399. The next prime is 2021335441. The reversal of 2021335421 is 1245331202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2021335421 - 2¹⁰ = 2021334397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021335441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31526 + ... + 70968.

It is an arithmetic number, because the mean of its divisors is an integer number (288808968).

Almost surely, 2^2021335421 is an apocalyptic number.

It is an amenable number.

2021335421 is a deficient number, since it is larger than the sum of its proper divisors (289136323).

2021335421 is an equidigital number, since it uses as much as digits as its factorization.

2021335421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46771.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2021335421 is about 44959.2640175526. The cubic root of 2021335421 is about 1264.3853703065.

Adding to 2021335421 its reverse (1245331202), we get a palindrome (3266666623).

The spelling of 2021335421 in words is "two billion, twenty-one million, three hundred thirty-five thousand, four hundred twenty-one".