12101021110 has 32 divisors (see below), whose sum is σ = 22589344800. Its totient is φ = 4661798400.

The previous prime is 12101021087. The next prime is 12101021111. The reversal of 12101021110 is 1112010121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101021111) by changing a digit.

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, 64261 + ... + 168319.

It is an arithmetic number, because the mean of its divisors is an integer number (705917025).

Almost surely, 2^12101021110 is an apocalyptic number.

12101021110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12101021110 is a deficient number, since it is larger than the sum of its proper divisors (10488323690).

12101021110 is a wasteful number, since it uses less digits than its factorization.

12101021110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104496.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12101021110 its reverse (1112010121), we get a palindrome (13213031231).

The spelling of 12101021110 in words is "twelve billion, one hundred one million, twenty-one thousand, one hundred ten".