12020012311111 has 8 divisors (see below), whose sum is σ = 13740059385504. Its totient is φ = 10300690851360.

The previous prime is 12020012311079. The next prime is 12020012311117. The reversal of 12020012311111 is 11111321002021.

It is a happy number.

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

It is not a de Polignac number, because 12020012311111 - 2⁵ = 12020012311079 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 (12020012311117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181368160 + ... + 181434421.

It is an arithmetic number, because the mean of its divisors is an integer number (1717507423188).

Almost surely, 2^{12020012311111} is an apocalyptic number.

12020012311111 is a deficient number, since it is larger than the sum of its proper divisors (1720047074393).

12020012311111 is an equidigital number, since it uses as much as digits as its factorization.

12020012311111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362807321.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 12020012311111 its reverse (11111321002021), we get a palindrome (23131333313132).

The spelling of 12020012311111 in words is "twelve trillion, twenty billion, twelve million, three hundred eleven thousand, one hundred eleven".