12020021002111 has 4 divisors (see below), whose sum is σ = 12064375323424. Its totient is φ = 11975666680800.

The previous prime is 12020021002109. The next prime is 12020021002151. The reversal of 12020021002111 is 11120012002021.

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 12020021002111 - 2¹ = 12020021002109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020021002091 and 12020021002100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020021002151) 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, 22177160250 + ... + 22177160791.

It is an arithmetic number, because the mean of its divisors is an integer number (3016093830856).

Almost surely, 2^{12020021002111} is an apocalyptic number.

12020021002111 is a deficient number, since it is larger than the sum of its proper divisors (44354321313).

12020021002111 is an equidigital number, since it uses as much as digits as its factorization.

12020021002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44354321312.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12020021002111 its reverse (11120012002021), we get a palindrome (23140033004132).

The spelling of 12020021002111 in words is "twelve trillion, twenty billion, twenty-one million, two thousand, one hundred eleven".