2021135 has 8 divisors (see below), whose sum is σ = 2442336. Its totient is φ = 1605600.

The previous prime is 2021119. The next prime is 2021137. The reversal of 2021135 is 5311202.

It is a happy number.

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

It is not a de Polignac number, because 2021135 - 2⁴ = 2021119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021137) 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, 584 + ... + 2093.

It is an arithmetic number, because the mean of its divisors is an integer number (305292).

2^2021135 is an apocalyptic number.

2021135 is a deficient number, since it is larger than the sum of its proper divisors (421201).

2021135 is a wasteful number, since it uses less digits than its factorization.

2021135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2833.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 2021135 is about 1421.6662758890. Note that the first 3 decimals coincide. The cubic root of 2021135 is about 126.4343579823.

Adding to 2021135 its reverse (5311202), we get a palindrome (7332337).

The spelling of 2021135 in words is "two million, twenty-one thousand, one hundred thirty-five".