12122121110 has 16 divisors (see below), whose sum is σ = 23803438032. Its totient is φ = 4408044000.

The previous prime is 12122121103. The next prime is 12122121149. The reversal of 12122121110 is 1112122121.

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, 55100441 + ... + 55100660.

It is an arithmetic number, because the mean of its divisors is an integer number (1487714877).

Almost surely, 2^12122121110 is an apocalyptic number.

12122121110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12122121110 is a deficient number, since it is larger than the sum of its proper divisors (11681316922).

12122121110 is a wasteful number, since it uses less digits than its factorization.

12122121110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110201119.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12122121110 its reverse (1112122121), we get a palindrome (13234243231).

The spelling of 12122121110 in words is "twelve billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred ten".