12120111012211 has 16 divisors (see below), whose sum is σ = 12683236104000. Its totient is φ = 11560010647680.

The previous prime is 12120111012187. The next prime is 12120111012253. The reversal of 12120111012211 is 11221011102121.

It is a cyclic number.

It is not a de Polignac number, because 12120111012211 - 2⁷ = 12120111012083 is a prime.

It is a super-2 number, since 2×12120111012211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12120111013211) 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, 49197801 + ... + 49443541.

It is an arithmetic number, because the mean of its divisors is an integer number (792702256500).

Almost surely, 2^{12120111012211} is an apocalyptic number.

12120111012211 is a deficient number, since it is larger than the sum of its proper divisors (563125091789).

12120111012211 is a wasteful number, since it uses less digits than its factorization.

12120111012211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251886.

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

Adding to 12120111012211 its reverse (11221011102121), we get a palindrome (23341122114332).

It can be divided in two parts, 1212011 and 1012211, that added together give a palindrome (2224222).

The spelling of 12120111012211 in words is "twelve trillion, one hundred twenty billion, one hundred eleven million, twelve thousand, two hundred eleven".