12121111020110 has 32 divisors (see below), whose sum is σ = 22229061271200. Its totient is φ = 4757881518208.

The previous prime is 12121111020091. The next prime is 12121111020113. The reversal of 12121111020110 is 1102011112121.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121111020113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48882197 + ... + 49129536.

It is an arithmetic number, because the mean of its divisors is an integer number (694658164725).

Almost surely, 2^{12121111020110} is an apocalyptic number.

12121111020110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121111020110 is a deficient number, since it is larger than the sum of its proper divisors (10107950251090).

12121111020110 is a wasteful number, since it uses less digits than its factorization.

12121111020110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98011972.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12121111020110 its reverse (1102011112121), we get a palindrome (13223122132231).

The spelling of 12121111020110 in words is "twelve trillion, one hundred twenty-one billion, one hundred eleven million, twenty thousand, one hundred ten".