12020121202111 has 8 divisors (see below), whose sum is σ = 13242689786448. Its totient is φ = 10819191000000.

The previous prime is 12020121202109. The next prime is 12020121202213. The reversal of 12020121202111 is 11120212102021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12020121202111 - 2¹ = 12020121202109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020121205111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5409594390 + ... + 5409596611.

It is an arithmetic number, because the mean of its divisors is an integer number (1655336223306).

Almost surely, 2^{12020121202111} is an apocalyptic number.

12020121202111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12020121202111 is a deficient number, since it is larger than the sum of its proper divisors (1222568584337).

12020121202111 is a wasteful number, since it uses less digits than its factorization.

12020121202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10819191113.

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

Adding to 12020121202111 its reverse (11120212102021), we get a palindrome (23140333304132).

It can be divided in two parts, 120201 and 21202111, that added together give a palindrome (21322312).

The spelling of 12020121202111 in words is "twelve trillion, twenty billion, one hundred twenty-one million, two hundred two thousand, one hundred eleven".