12101005 has 32 divisors (see below), whose sum is σ = 18063360. Its totient is φ = 7594560.

The previous prime is 12101003. The next prime is 12101009. The reversal of 12101005 is 50010121.

It is a happy number.

12101005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12101005 - 2¹ = 12101003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12100982 and 12101000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20322 + ... + 20908.

It is an arithmetic number, because the mean of its divisors is an integer number (564480).

Almost surely, 2^12101005 is an apocalyptic number.

It is an amenable number.

12101005 is a deficient number, since it is larger than the sum of its proper divisors (5962355).

12101005 is a wasteful number, since it uses less digits than its factorization.

12101005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649.

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 12101005 is about 3478.6498817788. The cubic root of 12101005 is about 229.5833983492.

Adding to 12101005 its reverse (50010121), we get a palindrome (62111126).

The spelling of 12101005 in words is "twelve million, one hundred one thousand, five".