12101004 has 72 divisors (see below), whose sum is σ = 32301360. Its totient is φ = 3814272.

The previous prime is 12101003. The next prime is 12101009. The reversal of 12101004 is 40010121.

12101004 = T₈₉₉ + T₉₀₀ + ... + T₉₂₇.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (12101003) 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 23 ways as a sum of consecutive naturals, for example, 69862 + ... + 70034.

It is an arithmetic number, because the mean of its divisors is an integer number (448630).

Almost surely, 2^12101004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12101004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16150680).

12101004 is an abundant number, since it is smaller than the sum of its proper divisors (20200356).

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

12101004 is a wasteful number, since it uses less digits than its factorization.

12101004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 12101004 is about 3478.6497380449. The cubic root of 12101004 is about 229.5833920251.

Adding to 12101004 its reverse (40010121), we get a palindrome (52111125).

The spelling of 12101004 in words is "twelve million, one hundred one thousand, four".