12121230110 has 32 divisors (see below), whose sum is σ = 23806546272. Its totient is φ = 4406820480.

The previous prime is 12121230109. The next prime is 12121230131. The reversal of 12121230110 is 1103212121.

It is a super-2 number, since 2×12121230110² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 785792 + ... + 801068.

It is an arithmetic number, because the mean of its divisors is an integer number (743954571).

Almost surely, 2^12121230110 is an apocalyptic number.

12121230110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121230110 is a deficient number, since it is larger than the sum of its proper divisors (11685316162).

12121230110 is a wasteful number, since it uses less digits than its factorization.

12121230110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22508.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12121230110 its reverse (1103212121), we get a palindrome (13224442231).

The spelling of 12121230110 in words is "twelve billion, one hundred twenty-one million, two hundred thirty thousand, one hundred ten".