12122121221110 has 16 divisors (see below), whose sum is σ = 21845278911456. Its totient is φ = 4843190552128.

The previous prime is 12122121221081. The next prime is 12122121221141. The reversal of 12122121221110 is 1112212122121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 707233042 + ... + 707250181.

It is an arithmetic number, because the mean of its divisors is an integer number (1365329931966).

Almost surely, 2^{12122121221110} is an apocalyptic number.

12122121221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12122121221110 is a deficient number, since it is larger than the sum of its proper divisors (9723157690346).

12122121221110 is a wasteful number, since it uses less digits than its factorization.

12122121221110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414484087.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12122121221110 its reverse (1112212122121), we get a palindrome (13234333343231).

The spelling of 12122121221110 in words is "twelve trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred ten".