211212210212212 has 96 divisors (see below), whose sum is σ = 422792411747328. Its totient is φ = 91387296000000.

The previous prime is 211212210212207. The next prime is 211212210212221. The reversal of 211212210212212 is 212212012212112.

It is a super-2 number, since 2×211212210212212² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 297093012 + ... + 297803092.

It is an arithmetic number, because the mean of its divisors is an integer number (4404087622368).

Almost surely, 2^{211212210212212} is an apocalyptic number.

211212210212212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211212210212212 is an abundant number, since it is smaller than the sum of its proper divisors (211580201535116).

211212210212212 is a wasteful number, since it uses less digits than its factorization.

211212210212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711541 (or 711539 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 211212210212212 its reverse (212212012212112), we get a palindrome (423424222424324).

The spelling of 211212210212212 in words is "two hundred eleven trillion, two hundred twelve billion, two hundred ten million, two hundred twelve thousand, two hundred twelve".