12021211000 has 64 divisors (see below), whose sum is σ = 29037116160. Its totient is φ = 4653360000.

The previous prime is 12021210983. The next prime is 12021211117. The reversal of 12021211000 is 11212021.

12021211000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162891 + ... + 224890.

It is an arithmetic number, because the mean of its divisors is an integer number (453704940).

Almost surely, 2^12021211000 is an apocalyptic number.

12021211000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021211000 is an abundant number, since it is smaller than the sum of its proper divisors (17015905160).

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

12021211000 is a wasteful number, since it uses less digits than its factorization.

12021211000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387833 (or 387819 counting only the distinct ones).

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

Adding to 12021211000 its reverse (11212021), we get a palindrome (12032423021).

The spelling of 12021211000 in words is "twelve billion, twenty-one million, two hundred eleven thousand".