12011021110 has 64 divisors (see below), whose sum is σ = 23834995200. Its totient is φ = 4321658880.

The previous prime is 12011021059. The next prime is 12011021137. The reversal of 12011021110 is 1112011021.

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

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 31 ways as a sum of consecutive naturals, for example, 4223349 + ... + 4226191.

It is an arithmetic number, because the mean of its divisors is an integer number (372421800).

Almost surely, 2^12011021110 is an apocalyptic number.

12011021110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12011021110 is a deficient number, since it is larger than the sum of its proper divisors (11823974090).

12011021110 is a wasteful number, since it uses less digits than its factorization.

12011021110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3253.

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

Adding to 12011021110 its reverse (1112011021), we get a palindrome (13123032131).

The spelling of 12011021110 in words is "twelve billion, eleven million, twenty-one thousand, one hundred ten".