12020121111210 has 32 divisors (see below), whose sum is σ = 28941050466432. Its totient is φ = 3195058985280.

The previous prime is 12020121111197. The next prime is 12020121111263. The reversal of 12020121111210 is 1211112102021.

It is a happy number.

12020121111210 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 Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12020121111210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 644155789 + ... + 644174448.

It is an arithmetic number, because the mean of its divisors is an integer number (904407827076).

Almost surely, 2^{12020121111210} is an apocalyptic number.

12020121111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12020121111210 is an abundant number, since it is smaller than the sum of its proper divisors (16920929355222).

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

12020121111210 is a wasteful number, since it uses less digits than its factorization.

12020121111210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288330558.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12020121111210 its reverse (1211112102021), we get a palindrome (13231233213231).

The spelling of 12020121111210 in words is "twelve trillion, twenty billion, one hundred twenty-one million, one hundred eleven thousand, two hundred ten".