12011355 has 32 divisors (see below), whose sum is σ = 21510720. Its totient is φ = 6359040.

The previous prime is 12011323. The next prime is 12011357. The reversal of 12011355 is 55311021.

It is not a de Polignac number, because 12011355 - 2⁵ = 12011323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12011357) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25825 + ... + 26285.

It is an arithmetic number, because the mean of its divisors is an integer number (672210).

Almost surely, 2^12011355 is an apocalyptic number.

12011355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12011355 is a deficient number, since it is larger than the sum of its proper divisors (9499365).

12011355 is a wasteful number, since it uses less digits than its factorization.

12011355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668 (or 662 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 12011355 is about 3465.7401806829. The cubic root of 12011355 is about 229.0150381358.

Adding to 12011355 its reverse (55311021), we get a palindrome (67322376).

It can be divided in two parts, 1201 and 1355, that added together give a triangular number (2556 = T₇₁).

The spelling of 12011355 in words is "twelve million, eleven thousand, three hundred fifty-five".