12021111120210 has 32 divisors (see below), whose sum is σ = 28850819524992. Its totient is φ = 3205612650240.

The previous prime is 12021111120191. The next prime is 12021111120211. The reversal of 12021111120210 is 1202111112021.

It is a happy number.

12021111120210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12021111120210² (a number of 27 digits) contains 22 as substring.

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 12021111120210.

It is not an unprimeable number, because it can be changed into a prime (12021111120211) 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, 5326282 + ... + 7239578.

It is an arithmetic number, because the mean of its divisors is an integer number (901588110156).

Almost surely, 2^{12021111120210} is an apocalyptic number.

12021111120210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12021111120210 is an abundant number, since it is smaller than the sum of its proper divisors (16829708404782).

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

12021111120210 is a wasteful number, since it uses less digits than its factorization.

12021111120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2122738.

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

Adding to 12021111120210 its reverse (1202111112021), we get a palindrome (13223222232231).

The spelling of 12021111120210 in words is "twelve trillion, twenty-one billion, one hundred eleven million, one hundred twenty thousand, two hundred ten".