12020021111111 has 16 divisors (see below), whose sum is σ = 13376821587360. Its totient is φ = 10730070691200.

The previous prime is 12020021111107. The next prime is 12020021111113. The reversal of 12020021111111 is 11111112002021.

12020021111111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12020021111111 - 2² = 12020021111107 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 (12020021111113) 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, 106392656 + ... + 106505573.

It is an arithmetic number, because the mean of its divisors is an integer number (836051349210).

Almost surely, 2^{12020021111111} is an apocalyptic number.

12020021111111 is a deficient number, since it is larger than the sum of its proper divisors (1356800476249).

12020021111111 is a wasteful number, since it uses less digits than its factorization.

12020021111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212898386.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12020021111111 its reverse (11111112002021), we get a palindrome (23131133113132).

The spelling of 12020021111111 in words is "twelve trillion, twenty billion, twenty-one million, one hundred eleven thousand, one hundred eleven".