12012154 has 36 divisors (see below), whose sum is σ = 23061402. Its totient is φ = 4675440.

The previous prime is 12012137. The next prime is 12012157. The reversal of 12012154 is 45121021.

It can be written as a sum of positive squares in only one way, i.e., 12006225 + 5929 = 3465^2 + 77^2 .

It is a hoax number, since the sum of its digits (16) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12012157) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11352 + ... + 12364.

Almost surely, 2^12012154 is an apocalyptic number.

12012154 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12012154 is a deficient number, since it is larger than the sum of its proper divisors (11049248).

12012154 is a wasteful number, since it uses less digits than its factorization.

12012154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051 (or 1033 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 12012154 is about 3465.8554499575. The cubic root of 12012154 is about 229.0201160796.

Adding to 12012154 its reverse (45121021), we get a palindrome (57133175).

The spelling of 12012154 in words is "twelve million, twelve thousand, one hundred fifty-four".