212210121211210 has 8 divisors (see below), whose sum is σ = 381978218180196. Its totient is φ = 84884048484480.

The previous prime is 212210121211201. The next prime is 212210121211339. The reversal of 212210121211210 is 12112121012212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 195353258395689 + 16856862815521 = 13976883^2 + 4105711^2 .

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

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, 10610506060551 + ... + 10610506060570.

Almost surely, 2^{212210121211210} is an apocalyptic number.

212210121211210 is a deficient number, since it is larger than the sum of its proper divisors (169768096968986).

212210121211210 is a wasteful number, since it uses less digits than its factorization.

212210121211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21221012121128.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212210121211210 its reverse (12112121012212), we get a palindrome (224322242223422).

The spelling of 212210121211210 in words is "two hundred twelve trillion, two hundred ten billion, one hundred twenty-one million, two hundred eleven thousand, two hundred ten".