12021211111110 has 64 divisors (see below), whose sum is σ = 29141094850560. Its totient is φ = 3173558083200.

The previous prime is 12021211111097. The next prime is 12021211111139. The reversal of 12021211111110 is 1111111212021.

12021211111110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12021211111110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3201190 + ... + 5855769.

It is an arithmetic number, because the mean of its divisors is an integer number (455329607040).

Almost surely, 2^{12021211111110} is an apocalyptic number.

12021211111110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12021211111110 is an abundant number, since it is smaller than the sum of its proper divisors (17119883739450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12021211111110 is a wasteful number, since it uses less digits than its factorization.

12021211111110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9057413.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12021211111110 its reverse (1111111212021), we get a palindrome (13132322323131).

The spelling of 12021211111110 in words is "twelve trillion, twenty-one billion, two hundred eleven million, one hundred eleven thousand, one hundred ten".