12101028 has 12 divisors (see below), whose sum is σ = 28235760. Its totient is φ = 4033672.

The previous prime is 12101021. The next prime is 12101053. The reversal of 12101028 is 82010121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 12100998 and 12101016.

It is not an unprimeable number, because it can be changed into a prime (12101021) by changing a digit.

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, 504198 + ... + 504221.

It is an arithmetic number, because the mean of its divisors is an integer number (2352980).

Almost surely, 2^12101028 is an apocalyptic number.

It is an amenable number.

12101028 is an abundant number, since it is smaller than the sum of its proper divisors (16134732).

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

12101028 is a wasteful number, since it uses less digits than its factorization.

12101028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008426 (or 1008424 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 12101028 is about 3478.6531876575. The cubic root of 12101028 is about 229.5835438031.

Adding to 12101028 its reverse (82010121), we get a palindrome (94111149).

The spelling of 12101028 in words is "twelve million, one hundred one thousand, twenty-eight".