211021221010212 has 24 divisors (see below), whose sum is σ = 547092054471200. Its totient is φ = 70340407003368.

The previous prime is 211021221010169. The next prime is 211021221010291. The reversal of 211021221010212 is 212010122120112.

211021221010212 is a `hidden beast` number, since 21 + 1 + 0 + 212 + 210 + 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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 976950097162 + ... + 976950097377.

Almost surely, 2^{211021221010212} is an apocalyptic number.

It is an amenable number.

211021221010212 is an abundant number, since it is smaller than the sum of its proper divisors (336070833460988).

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

211021221010212 is a wasteful number, since it uses less digits than its factorization.

211021221010212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953900194552 (or 1953900194544 counting only the distinct ones).

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

Adding to 211021221010212 its reverse (212010122120112), we get a palindrome (423031343130324).

The spelling of 211021221010212 in words is "two hundred eleven trillion, twenty-one billion, two hundred twenty-one million, ten thousand, two hundred twelve".