210101210212 has 12 divisors (see below), whose sum is σ = 370360893420. Its totient is φ = 104283812096.

The previous prime is 210101210197. The next prime is 210101210239. The reversal of 210101210212 is 212012101012.

It can be written as a sum of positive squares in 2 ways, for example, as 68488983616 + 141612226596 = 261704^2 + 376314^2 .

It is a junction number, because it is equal to n+sod(n) for n = 210101210192 and 210101210201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191697637 + ... + 191698732.

It is an arithmetic number, because the mean of its divisors is an integer number (30863407785).

Almost surely, 2^210101210212 is an apocalyptic number.

It is an amenable number.

210101210212 is a deficient number, since it is larger than the sum of its proper divisors (160259683208).

210101210212 is a wasteful number, since it uses less digits than its factorization.

210101210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383396510 (or 383396508 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210101210212 its reverse (212012101012), we get a palindrome (422113311224).

The spelling of 210101210212 in words is "two hundred ten billion, one hundred one million, two hundred ten thousand, two hundred twelve".