12111122110 has 16 divisors (see below), whose sum is σ = 21856068000. Its totient is φ = 4831993696.

The previous prime is 12111122083. The next prime is 12111122117. The reversal of 12111122110 is 1122111121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111122117) 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, 1552810 + ... + 1560589.

It is an arithmetic number, because the mean of its divisors is an integer number (1366004250).

Almost surely, 2^12111122110 is an apocalyptic number.

12111122110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12111122110 is a deficient number, since it is larger than the sum of its proper divisors (9744945890).

12111122110 is a wasteful number, since it uses less digits than its factorization.

12111122110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3113795.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12111122110 its reverse (1122111121), we get a palindrome (13233233231).

The spelling of 12111122110 in words is "twelve billion, one hundred eleven million, one hundred twenty-two thousand, one hundred ten".