212101021001210 has 96 divisors (see below), whose sum is σ = 448910190363600. Its totient is φ = 71842365112320.

The previous prime is 212101021001209. The next prime is 212101021001251. The reversal of 212101021001210 is 12100120101212.

It can be written as a sum of positive squares in 8 ways, for example, as 75539616970609 + 136561404030601 = 8691353^2 + 11685949^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51155135 + ... + 55145714.

Almost surely, 2^{212101021001210} is an apocalyptic number.

212101021001210 is an abundant number, since it is smaller than the sum of its proper divisors (236809169362390).

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

212101021001210 is a wasteful number, since it uses less digits than its factorization.

212101021001210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106300992 (or 106300981 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212101021001210 its reverse (12100120101212), we get a palindrome (224201141102422).

The spelling of 212101021001210 in words is "two hundred twelve trillion, one hundred one billion, twenty-one million, one thousand, two hundred ten".