12011356 has 12 divisors (see below), whose sum is σ = 24022768. Its totient is φ = 5147712.

The previous prime is 12011323. The next prime is 12011357. The reversal of 12011356 is 65311021.

12011356 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 214461 + ... + 214516.

Almost surely, 2^12011356 is an apocalyptic number.

It is an amenable number.

12011356 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12011356 is a wasteful number, since it uses less digits than its factorization.

12011356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428988 (or 428986 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 12011356 is about 3465.7403249522. The cubic root of 12011356 is about 229.0150444913.

Adding to 12011356 its reverse (65311021), we get a palindrome (77322377).

It can be divided in two parts, 120 and 11356, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 12011356 in words is "twelve million, eleven thousand, three hundred fifty-six".