211012001212221 has 24 divisors (see below), whose sum is σ = 334361322416160. Its totient is φ = 127171614060000.

The previous prime is 211012001212099. The next prime is 211012001212223. The reversal of 211012001212221 is 122212100210112.

211012001212221 is a `hidden beast` number, since 2 + 110 + 120 + 0 + 1 + 212 + 221 = 666.

It is not a de Polignac number, because 211012001212221 - 2¹⁰ = 211012001211197 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 211012001212194 and 211012001212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211012001212223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5953709530 + ... + 5953744971.

It is an arithmetic number, because the mean of its divisors is an integer number (13931721767340).

Almost surely, 2^{211012001212221} is an apocalyptic number.

It is an amenable number.

211012001212221 is a deficient number, since it is larger than the sum of its proper divisors (123349321203939).

211012001212221 is a wasteful number, since it uses less digits than its factorization.

211012001212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11907454697 (or 11907454694 counting only the distinct ones).

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

Adding to 211012001212221 its reverse (122212100210112), we get a palindrome (333224101422333).

The spelling of 211012001212221 in words is "two hundred eleven trillion, twelve billion, one million, two hundred twelve thousand, two hundred twenty-one".