12211012 has 24 divisors (see below), whose sum is σ = 23450112. Its totient is φ = 5517600.

The previous prime is 12211009. The next prime is 12211021. The reversal of 12211012 is 21011221.

It is a self number, because there is not a number n which added to its sum of digits gives 12211012.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7678 + ... + 9130.

It is an arithmetic number, because the mean of its divisors is an integer number (977088).

Almost surely, 2^12211012 is an apocalyptic number.

It is an amenable number.

12211012 is a deficient number, since it is larger than the sum of its proper divisors (11239100).

12211012 is a wasteful number, since it uses less digits than its factorization.

12211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659 (or 1657 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 12211012 is about 3494.4258469740. The cubic root of 12211012 is about 230.2769945672.

Adding to 12211012 its reverse (21011221), we get a palindrome (33222233).

The spelling of 12211012 in words is "twelve million, two hundred eleven thousand, twelve".