211212110221211 has 8 divisors (see below), whose sum is σ = 230413708409664. Its totient is φ = 192010594909320.

The previous prime is 211212110221183. The next prime is 211212110221219. The reversal of 211212110221211 is 112122011212112.

It is a happy number.

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

It is not a de Polignac number, because 211212110221211 - 2¹⁴ = 211212110204827 is a prime.

It is a super-2 number, since 2×211212110221211² (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 (211212110221219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15329465 + ... + 25640138.

It is an arithmetic number, because the mean of its divisors is an integer number (28801713551208).

Almost surely, 2^{211212110221211} is an apocalyptic number.

211212110221211 is a deficient number, since it is larger than the sum of its proper divisors (19201598188453).

211212110221211 is a wasteful number, since it uses less digits than its factorization.

211212110221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41438281.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 211212110221211 its reverse (112122011212112), we get a palindrome (323334121433323).

Subtracting from 211212110221211 its reverse (112122011212112), we obtain a palindrome (99090099009099).

The spelling of 211212110221211 in words is "two hundred eleven trillion, two hundred twelve billion, one hundred ten million, two hundred twenty-one thousand, two hundred eleven".