12001012 has 12 divisors (see below), whose sum is σ = 21726180. Its totient is φ = 5793536.

The previous prime is 12001001. The next prime is 12001021. The reversal of 12001012 is 21010021.

It can be written as a sum of positive squares in 2 ways, for example, as 4999696 + 7001316 = 2236^2 + 2646^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12000986 and 12001004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51613 + ... + 51844.

It is an arithmetic number, because the mean of its divisors is an integer number (1810515).

Almost surely, 2^12001012 is an apocalyptic number.

It is an amenable number.

12001012 is a deficient number, since it is larger than the sum of its proper divisors (9725168).

12001012 is a wasteful number, since it uses less digits than its factorization.

12001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103490 (or 103488 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 12001012 is about 3464.2476816764. The cubic root of 12001012 is about 228.9492841676.

Adding to 12001012 its reverse (21010021), we get a palindrome (33011033).

Subtracting 12001012 from its reverse (21010021), we obtain a palindrome (9009009).

The spelling of 12001012 in words is "twelve million, one thousand, twelve".