211121220010212 has 288 divisors, whose sum is σ = 543831946939008. Its totient is φ = 69050016000000.

The previous prime is 211121220010157. The next prime is 211121220010237. The reversal of 211121220010212 is 212010022121112.

211121220010212 is a `hidden beast` number, since 21 + 11 + 212 + 200 + 10 + 212 = 666.

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

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 95 ways as a sum of consecutive naturals, for example, 200876517087 + ... + 200876518137.

It is an arithmetic number, because the mean of its divisors is an integer number (1888305371316).

Almost surely, 2^{211121220010212} is an apocalyptic number.

It is an amenable number.

211121220010212 is an abundant number, since it is smaller than the sum of its proper divisors (332710726928796).

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

211121220010212 is a wasteful number, since it uses less digits than its factorization.

211121220010212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331 (or 2326 counting only the distinct ones).

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

Adding to 211121220010212 its reverse (212010022121112), we get a palindrome (423131242131324).

The spelling of 211121220010212 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred twenty million, ten thousand, two hundred twelve".