12122221100211 has 24 divisors (see below), whose sum is σ = 17985888461424. Its totient is φ = 7861849554240.

The previous prime is 12122221100183. The next prime is 12122221100239. The reversal of 12122221100211 is 11200112222121.

12122221100211 is a `hidden beast` number, since 1 + 21 + 222 + 211 + 0 + 0 + 211 = 666.

It is an interprime number because it is at equal distance from previous prime (12122221100183) and next prime (12122221100239).

It is not a de Polignac number, because 12122221100211 - 2²² = 12122216905907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12122221100251) 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, 642616 + ... + 4965621.

It is an arithmetic number, because the mean of its divisors is an integer number (749412019226).

Almost surely, 2^{12122221100211} is an apocalyptic number.

12122221100211 is a deficient number, since it is larger than the sum of its proper divisors (5863667361213).

12122221100211 is a wasteful number, since it uses less digits than its factorization.

12122221100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5614771 (or 5614768 counting only the distinct ones).

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

Adding to 12122221100211 its reverse (11200112222121), we get a palindrome (23322333322332).

The spelling of 12122221100211 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred thousand, two hundred eleven".