12012111221010 has 32 divisors (see below), whose sum is σ = 28857526102080. Its totient is φ = 3200067528768.

The previous prime is 12012111220999. The next prime is 12012111221093. The reversal of 12012111221010 is 1012211121021.

It is a happy number.

12012111221010 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 an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197602240 + ... + 197663019.

It is an arithmetic number, because the mean of its divisors is an integer number (901797690690).

Almost surely, 2^{12012111221010} is an apocalyptic number.

12012111221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12012111221010 is an abundant number, since it is smaller than the sum of its proper divisors (16845414881070).

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

12012111221010 is a wasteful number, since it uses less digits than its factorization.

12012111221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395266282.

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

Adding to 12012111221010 its reverse (1012211121021), we get a palindrome (13024322342031).

The spelling of 12012111221010 in words is "twelve trillion, twelve billion, one hundred eleven million, two hundred twenty-one thousand, ten".