210102020121212 has 12 divisors (see below), whose sum is σ = 367682664410880. Its totient is φ = 105049830289536.

The previous prime is 210102020121193. The next prime is 210102020121221. The reversal of 210102020121212 is 212121020201012.

It is a super-2 number, since 2×210102020121212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 294542012 + ... + 295254467.

It is an arithmetic number, because the mean of its divisors is an integer number (30640222034240).

Almost surely, 2^{210102020121212} is an apocalyptic number.

It is an amenable number.

210102020121212 is a deficient number, since it is larger than the sum of its proper divisors (157580644289668).

210102020121212 is a wasteful number, since it uses less digits than its factorization.

210102020121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589885540 (or 589885538 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210102020121212 its reverse (212121020201012), we get a palindrome (422223040322224).

The spelling of 210102020121212 in words is "two hundred ten trillion, one hundred two billion, twenty million, one hundred twenty-one thousand, two hundred twelve".