20201135 has 4 divisors (see below), whose sum is σ = 24241368. Its totient is φ = 16160904.

The previous prime is 20201113. The next prime is 20201141. The reversal of 20201135 is 53110202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53110202 = 2 ⋅26555101.

It is a cyclic number.

It is not a de Polignac number, because 20201135 - 2¹⁰ = 20200111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2020109 + ... + 2020118.

It is an arithmetic number, because the mean of its divisors is an integer number (6060342).

Almost surely, 2^20201135 is an apocalyptic number.

20201135 is a deficient number, since it is larger than the sum of its proper divisors (4040233).

20201135 is an equidigital number, since it uses as much as digits as its factorization.

20201135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040232.

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

The square root of 20201135 is about 4494.5672761680. The cubic root of 20201135 is about 272.3486688856.

Adding to 20201135 its reverse (53110202), we get a palindrome (73311337).

The spelling of 20201135 in words is "twenty million, two hundred one thousand, one hundred thirty-five".