212120202011210 has 8 divisors (see below), whose sum is σ = 381816363620196. Its totient is φ = 84848080804480.

The previous prime is 212120202011191. The next prime is 212120202011219. The reversal of 212120202011210 is 12110202021212.

It can be written as a sum of positive squares in 2 ways, for example, as 187788899624881 + 24331302386329 = 13703609^2 + 4932677^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (212120202011219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10606010100551 + ... + 10606010100570.

Almost surely, 2^{212120202011210} is an apocalyptic number.

212120202011210 is a deficient number, since it is larger than the sum of its proper divisors (169696161608986).

212120202011210 is a wasteful number, since it uses less digits than its factorization.

212120202011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21212020201128.

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

Adding to 212120202011210 its reverse (12110202021212), we get a palindrome (224230404032422).

The spelling of 212120202011210 in words is "two hundred twelve trillion, one hundred twenty billion, two hundred two million, eleven thousand, two hundred ten".