12021221110111 has 8 divisors (see below), whose sum is σ = 12049956993600. Its totient is φ = 11992497176352.

The previous prime is 12021221110103. The next prime is 12021221110141. The reversal of 12021221110111 is 11101112212021.

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 12021221110111 - 2³ = 12021221110103 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 (12021221110141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 971440 + ... + 4998613.

It is an arithmetic number, because the mean of its divisors is an integer number (1506244624200).

Almost surely, 2^{12021221110111} is an apocalyptic number.

12021221110111 is a deficient number, since it is larger than the sum of its proper divisors (28735883489).

12021221110111 is an equidigital number, since it uses as much as digits as its factorization.

12021221110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5974865.

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

Adding to 12021221110111 its reverse (11101112212021), we get a palindrome (23122333322132).

The spelling of 12021221110111 in words is "twelve trillion, twenty-one billion, two hundred twenty-one million, one hundred ten thousand, one hundred eleven".