12022155 has 64 divisors (see below), whose sum is σ = 23232000. Its totient is φ = 5878656.

The previous prime is 12022139. The next prime is 12022159. The reversal of 12022155 is 55122021.

12022155 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12022155 - 2⁴ = 12022139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12022159) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 110241 + ... + 110349.

It is an arithmetic number, because the mean of its divisors is an integer number (363000).

Almost surely, 2^12022155 is an apocalyptic number.

12022155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12022155 is a deficient number, since it is larger than the sum of its proper divisors (11209845).

12022155 is a wasteful number, since it uses less digits than its factorization.

12022155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 12022155 is about 3467.2979393182. The cubic root of 12022155 is about 229.0836571349.

Adding to 12022155 its reverse (55122021), we get a palindrome (67144176).

The spelling of 12022155 in words is "twelve million, twenty-two thousand, one hundred fifty-five".