212210101221211 has 4 divisors (see below), whose sum is σ = 212471765958424. Its totient is φ = 211948436484000.

The previous prime is 212210101221197. The next prime is 212210101221259. The reversal of 212210101221211 is 112122101012212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212210101221211 - 2¹⁷ = 212210101090139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212210101261211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130832367390 + ... + 130832369011.

It is an arithmetic number, because the mean of its divisors is an integer number (53117941489606).

Almost surely, 2^{212210101221211} is an apocalyptic number.

212210101221211 is a deficient number, since it is larger than the sum of its proper divisors (261664737213).

212210101221211 is an equidigital number, since it uses as much as digits as its factorization.

212210101221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261664737212.

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

Adding to 212210101221211 its reverse (112122101012212), we get a palindrome (324332202233423).

It can be divided in two parts, 2122101012212 and 11, that multiplied together give a palindrome (23343111134332).

The spelling of 212210101221211 in words is "two hundred twelve trillion, two hundred ten billion, one hundred one million, two hundred twenty-one thousand, two hundred eleven".