12021221110 has 8 divisors (see below), whose sum is σ = 21638198016. Its totient is φ = 4808488440.

The previous prime is 12021221077. The next prime is 12021221117. The reversal of 12021221110 is 1112212021.

12021221110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-4 number, since 4×12021221110⁴ (a number of 41 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021221117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601061046 + ... + 601061065.

It is an arithmetic number, because the mean of its divisors is an integer number (2704774752).

Almost surely, 2^12021221110 is an apocalyptic number.

12021221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12021221110 is a deficient number, since it is larger than the sum of its proper divisors (9616976906).

12021221110 is a wasteful number, since it uses less digits than its factorization.

12021221110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202122118.

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

Adding to 12021221110 its reverse (1112212021), we get a palindrome (13133433131).

The spelling of 12021221110 in words is "twelve billion, twenty-one million, two hundred twenty-one thousand, one hundred ten".