12120220112011 has 4 divisors (see below), whose sum is σ = 13222058304024. Its totient is φ = 11018381920000.

The previous prime is 12120220111981. The next prime is 12120220112023. The reversal of 12120220112011 is 11021102202121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12120220112011 - 2¹³ = 12120220103819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120220112111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550919095990 + ... + 550919096011.

It is an arithmetic number, because the mean of its divisors is an integer number (3305514576006).

Almost surely, 2^{12120220112011} is an apocalyptic number.

12120220112011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12120220112011 is a deficient number, since it is larger than the sum of its proper divisors (1101838192013).

12120220112011 is a wasteful number, since it uses less digits than its factorization.

12120220112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101838192012.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12120220112011 its reverse (11021102202121), we get a palindrome (23141322314132).

The spelling of 12120220112011 in words is "twelve trillion, one hundred twenty billion, two hundred twenty million, one hundred twelve thousand, eleven".