12122154 has 24 divisors (see below), whose sum is σ = 28652832. Its totient is φ = 3673320.

The previous prime is 12122153. The next prime is 12122167. The reversal of 12122154 is 45122121.

12122154 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 (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12122153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30414 + ... + 30809.

It is an arithmetic number, because the mean of its divisors is an integer number (1193868).

Almost surely, 2^12122154 is an apocalyptic number.

12122154 is an abundant number, since it is smaller than the sum of its proper divisors (16530678).

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

12122154 is a wasteful number, since it uses less digits than its factorization.

12122154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61242 (or 61239 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 12122154 is about 3481.6883835289. The cubic root of 12122154 is about 229.7170686076.

Adding to 12122154 its reverse (45122121), we get a palindrome (57244275).

The spelling of 12122154 in words is "twelve million, one hundred twenty-two thousand, one hundred fifty-four".