20121335 has 8 divisors (see below), whose sum is σ = 26003040. Its totient is φ = 14858784.

The previous prime is 20121307. The next prime is 20121337. The reversal of 20121335 is 53312102.

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 20121335 - 2⁶ = 20121271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121337) 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, 154715 + ... + 154844.

It is an arithmetic number, because the mean of its divisors is an integer number (3250380).

Almost surely, 2^20121335 is an apocalyptic number.

20121335 is a deficient number, since it is larger than the sum of its proper divisors (5881705).

20121335 is a wasteful number, since it uses less digits than its factorization.

20121335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309577.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 20121335 is about 4485.6811077026. The cubic root of 20121335 is about 271.9895784286.

Adding to 20121335 its reverse (53312102), we get a palindrome (73433437).

The spelling of 20121335 in words is "twenty million, one hundred twenty-one thousand, three hundred thirty-five".