12155016 has 16 divisors (see below), whose sum is σ = 30387600. Its totient is φ = 4051664.

The previous prime is 12154993. The next prime is 12155021. The reversal of 12155016 is 61055121.

It is a junction number, because it is equal to n+sod(n) for n = 12154983 and 12155001.

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, 253206 + ... + 253253.

It is an arithmetic number, because the mean of its divisors is an integer number (1899225).

Almost surely, 2^12155016 is an apocalyptic number.

It is an amenable number.

12155016 is an abundant number, since it is smaller than the sum of its proper divisors (18232584).

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

12155016 is a wasteful number, since it uses less digits than its factorization.

12155016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506468 (or 506464 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 12155016 is about 3486.4044515805. The cubic root of 12155016 is about 229.9244616463.

The spelling of 12155016 in words is "twelve million, one hundred fifty-five thousand, sixteen".