12121112112110 has 16 divisors (see below), whose sum is σ = 23101413672816. Its totient is φ = 4563242206848.

The previous prime is 12121112112101. The next prime is 12121112112199. The reversal of 12121112112110 is 1121121112121.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35650329572 + ... + 35650329911.

It is an arithmetic number, because the mean of its divisors is an integer number (1443838354551).

Almost surely, 2^{12121112112110} is an apocalyptic number.

12121112112110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121112112110 is a deficient number, since it is larger than the sum of its proper divisors (10980301560706).

12121112112110 is a wasteful number, since it uses less digits than its factorization.

12121112112110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71300659507.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 12121112112110 its reverse (1121121112121), we get a palindrome (13242233224231).

The spelling of 12121112112110 in words is "twelve trillion, one hundred twenty-one billion, one hundred twelve million, one hundred twelve thousand, one hundred ten".