12012221101111 has 16 divisors (see below), whose sum is σ = 15627418080768. Its totient is φ = 8953208272800.

The previous prime is 12012221101103. The next prime is 12012221101183. The reversal of 12012221101111 is 11110112221021.

It is not a de Polignac number, because 12012221101111 - 2³ = 12012221101103 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 (12012221104111) 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, 3391365000 + ... + 3391368541.

It is an arithmetic number, because the mean of its divisors is an integer number (976713630048).

Almost surely, 2^{12012221101111} is an apocalyptic number.

12012221101111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12012221101111 is a deficient number, since it is larger than the sum of its proper divisors (3615196979657).

12012221101111 is a wasteful number, since it uses less digits than its factorization.

12012221101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6782733582.

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

Adding to 12012221101111 its reverse (11110112221021), we get a palindrome (23122333322132).

The spelling of 12012221101111 in words is "twelve trillion, twelve billion, two hundred twenty-one million, one hundred one thousand, one hundred eleven".