212202110121211 has 4 divisors (see below), whose sum is σ = 242516697281392. Its totient is φ = 181887522961032.

The previous prime is 212202110121187. The next prime is 212202110121233. The reversal of 212202110121211 is 112121011202212.

It is a happy number.

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

It is not a de Polignac number, because 212202110121211 - 2¹¹ = 212202110119163 is a prime.

It is a super-2 number, since 2×212202110121211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212202110121511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15157293580080 + ... + 15157293580093.

It is an arithmetic number, because the mean of its divisors is an integer number (60629174320348).

Almost surely, 2^{212202110121211} is an apocalyptic number.

212202110121211 is a deficient number, since it is larger than the sum of its proper divisors (30314587160181).

212202110121211 is an equidigital number, since it uses as much as digits as its factorization.

212202110121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30314587160180.

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

Adding to 212202110121211 its reverse (112121011202212), we get a palindrome (324323121323423).

The spelling of 212202110121211 in words is "two hundred twelve trillion, two hundred two billion, one hundred ten million, one hundred twenty-one thousand, two hundred eleven".