12011211004 has 24 divisors (see below), whose sum is σ = 22644503280. Its totient is φ = 5541679104.

The previous prime is 12011210999. The next prime is 12011211011. The reversal of 12011211004 is 40011211021.

It is a super-2 number, since 2×12011211004² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113532 + ... + 192124.

It is an arithmetic number, because the mean of its divisors is an integer number (943520970).

Almost surely, 2^12011211004 is an apocalyptic number.

It is an amenable number.

12011211004 is a deficient number, since it is larger than the sum of its proper divisors (10633292276).

12011211004 is a wasteful number, since it uses less digits than its factorization.

12011211004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81549 (or 81547 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12011211004 its reverse (40011211021), we get a palindrome (52022422025).

The spelling of 12011211004 in words is "twelve billion, eleven million, two hundred eleven thousand, four".