12021121121110 has 64 divisors (see below), whose sum is σ = 23284402689600. Its totient is φ = 4452127690752.

The previous prime is 12021121121069. The next prime is 12021121121117. The reversal of 12021121121110 is 1112112112021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021121121117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3582421 + ... + 6072559.

It is an arithmetic number, because the mean of its divisors is an integer number (363818792025).

Almost surely, 2^{12021121121110} is an apocalyptic number.

12021121121110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12021121121110 is a deficient number, since it is larger than the sum of its proper divisors (11263281568490).

12021121121110 is a wasteful number, since it uses less digits than its factorization.

12021121121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490625.

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

Adding to 12021121121110 its reverse (1112112112021), we get a palindrome (13133233233131).

The spelling of 12021121121110 in words is "twelve trillion, twenty-one billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred ten".