12001355 has 4 divisors (see below), whose sum is σ = 14401632. Its totient is φ = 9601080.

The previous prime is 12001349. The next prime is 12001361. The reversal of 12001355 is 55310021.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12001349) and next prime (12001361).

It is not a de Polignac number, because 12001355 - 2⁶ = 12001291 is a prime.

It is a Duffinian number.

12001355 is a modest number, since divided by 1355 gives 120 as remainder.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1200131 + ... + 1200140.

It is an arithmetic number, because the mean of its divisors is an integer number (3600408).

Almost surely, 2^12001355 is an apocalyptic number.

12001355 is a deficient number, since it is larger than the sum of its proper divisors (2400277).

12001355 is an equidigital number, since it uses as much as digits as its factorization.

12001355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2400276.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 12001355 is about 3464.2971870208. The cubic root of 12001355 is about 228.9514653408.

Adding to 12001355 its reverse (55310021), we get a palindrome (67311376).

The spelling of 12001355 in words is "twelve million, one thousand, three hundred fifty-five".