12210002000 has 80 divisors (see below), whose sum is σ = 33741507072. Its totient is φ = 4186281600.

The previous prime is 12210001981. The next prime is 12210002011. The reversal of 12210002000 is 20001221.

12210002000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (8).

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, 422072 + ... + 450071.

Almost surely, 2^12210002000 is an apocalyptic number.

12210002000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12210002000 is an abundant number, since it is smaller than the sum of its proper divisors (21531505072).

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

12210002000 is an equidigital number, since it uses as much as digits as its factorization.

12210002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872173 (or 872157 counting only the distinct ones).

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

Adding to 12210002000 its reverse (20001221), we get a palindrome (12230003221).

The spelling of 12210002000 in words is "twelve billion, two hundred ten million, two thousand".