12155044 has 12 divisors (see below), whose sum is σ = 23205168. Its totient is φ = 5525000.

The previous prime is 12155029. The next prime is 12155057. The reversal of 12155044 is 44055121.

12155044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 138082 + ... + 138169.

It is an arithmetic number, because the mean of its divisors is an integer number (1933764).

Almost surely, 2^12155044 is an apocalyptic number.

It is an amenable number.

12155044 is a deficient number, since it is larger than the sum of its proper divisors (11050124).

12155044 is a wasteful number, since it uses less digits than its factorization.

12155044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276266 (or 276264 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 12155044 is about 3486.4084671765. The cubic root of 12155044 is about 229.9246381956.

The spelling of 12155044 in words is "twelve million, one hundred fifty-five thousand, forty-four".