12211000211121 has 16 divisors (see below), whose sum is σ = 16725294589248. Its totient is φ = 7918789608000.

The previous prime is 12211000211119. The next prime is 12211000211131. The reversal of 12211000211121 is 12111200011221.

It is a happy number.

It is not a de Polignac number, because 12211000211121 - 2¹ = 12211000211119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12211000211121.

It is not an unprimeable number, because it can be changed into a prime (12211000211101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12435855 + ... + 13381796.

It is an arithmetic number, because the mean of its divisors is an integer number (1045330911828).

Almost surely, 2^{12211000211121} is an apocalyptic number.

It is an amenable number.

12211000211121 is a deficient number, since it is larger than the sum of its proper divisors (4514294378127).

12211000211121 is a wasteful number, since it uses less digits than its factorization.

12211000211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25821952.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12211000211121 its reverse (12111200011221), we get a palindrome (24322200222342).

The spelling of 12211000211121 in words is "twelve trillion, two hundred eleven billion, two hundred eleven thousand, one hundred twenty-one".