212120100002002 has 4 divisors (see below), whose sum is σ = 318180150003006. Its totient is φ = 106060050001000.

The previous prime is 212120100001993. The next prime is 212120100002089. The reversal of 212120100002002 is 200200001021212.

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., 192021188123241 + 20098911878761 = 13857171^2 + 4483181^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53030025000499 + ... + 53030025000502.

Almost surely, 2^{212120100002002} is an apocalyptic number.

212120100002002 is a deficient number, since it is larger than the sum of its proper divisors (106060050001004).

212120100002002 is a wasteful number, since it uses less digits than its factorization.

212120100002002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106060050001003.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 212120100002002 its reverse (200200001021212), we get a palindrome (412320101023214).

The spelling of 212120100002002 in words is "two hundred twelve trillion, one hundred twenty billion, one hundred million, two thousand, two".