211211002120212 has 84 divisors (see below), whose sum is σ = 557845406139616. Its totient is φ = 69937417774800.

The previous prime is 211211002120189. The next prime is 211211002120243. The reversal of 211211002120212 is 212021200112112.

211211002120212 is a `hidden beast` number, since 21 + 121 + 100 + 212 + 0 + 212 = 666.

It is a super-2 number, since 2×211211002120212² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 239399938 + ... + 240280569.

Almost surely, 2^{211211002120212} is an apocalyptic number.

It is an amenable number.

211211002120212 is an abundant number, since it is smaller than the sum of its proper divisors (346634404019404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211211002120212 is a wasteful number, since it uses less digits than its factorization.

211211002120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479680680 (or 479680663 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211211002120212 its reverse (212021200112112), we get a palindrome (423232202232324).

The spelling of 211211002120212 in words is "two hundred eleven trillion, two hundred eleven billion, two million, one hundred twenty thousand, two hundred twelve".