212101101101210 has 16 divisors (see below), whose sum is σ = 381784084838856. Its totient is φ = 84839973139008.

The previous prime is 212101101101207. The next prime is 212101101101243. The reversal of 212101101101210 is 12101101101212.

It can be written as a sum of positive squares in 4 ways, for example, as 211629378015169 + 471723086041 = 14547487^2 + 686821^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56503397 + ... + 60140136.

Almost surely, 2^{212101101101210} is an apocalyptic number.

212101101101210 is a deficient number, since it is larger than the sum of its proper divisors (169682983737646).

212101101101210 is a wasteful number, since it uses less digits than its factorization.

212101101101210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116825377.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 212101101101210 its reverse (12101101101212), we get a palindrome (224202202202422).

The spelling of 212101101101210 in words is "two hundred twelve trillion, one hundred one billion, one hundred one million, one hundred one thousand, two hundred ten".