12212100002 has 4 divisors (see below), whose sum is σ = 18318150006. Its totient is φ = 6106050000.

The previous prime is 12212099959. The next prime is 12212100007. The reversal of 12212100002 is 20000121221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9896469361 + 2315630641 = 99481^2 + 48121^2 .

It is not an unprimeable number, because it can be changed into a prime (12212100007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3053024999 + ... + 3053025002.

Almost surely, 2^12212100002 is an apocalyptic number.

12212100002 is a deficient number, since it is larger than the sum of its proper divisors (6106050004).

12212100002 is an equidigital number, since it uses as much as digits as its factorization.

12212100002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6106050003.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12212100002 its reverse (20000121221), we get a palindrome (32212221223).

The spelling of 12212100002 in words is "twelve billion, two hundred twelve million, one hundred thousand, two".