12121200221211 has 12 divisors (see below), whose sum is σ = 17508755304040. Its totient is φ = 8080636308480.

The previous prime is 12121200221177. The next prime is 12121200221243. The reversal of 12121200221211 is 11212200212121.

12121200221211 is a `hidden beast` number, since 1 + 21 + 212 + 0 + 0 + 221 + 211 = 666.

It is not a de Polignac number, because 12121200221211 - 2¹³ = 12121200213019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121200226211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13183846 + ... + 14073243.

Almost surely, 2^{12121200221211} is an apocalyptic number.

12121200221211 is a deficient number, since it is larger than the sum of its proper divisors (5387555082829).

12121200221211 is a wasteful number, since it uses less digits than its factorization.

12121200221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27306506 (or 27306503 counting only the distinct ones).

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

Adding to 12121200221211 its reverse (11212200212121), we get a palindrome (23333400433332).

The spelling of 12121200221211 in words is "twelve trillion, one hundred twenty-one billion, two hundred million, two hundred twenty-one thousand, two hundred eleven".