12011211221010 has 32 divisors (see below), whose sum is σ = 30522607339392. Its totient is φ = 3014578502400.

The previous prime is 12011211220999. The next prime is 12011211221011. The reversal of 12011211221010 is 1012211211021.

It is a happy number.

12011211221010 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 not an unprimeable number, because it can be changed into a prime (12011211221011) 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, 11775696766 + ... + 11775697785.

It is an arithmetic number, because the mean of its divisors is an integer number (953831479356).

Almost surely, 2^{12011211221010} is an apocalyptic number.

12011211221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12011211221010 is an abundant number, since it is smaller than the sum of its proper divisors (18511396118382).

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

12011211221010 is a wasteful number, since it uses less digits than its factorization.

12011211221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23551394578.

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

Adding to 12011211221010 its reverse (1012211211021), we get a palindrome (13023422432031).

The spelling of 12011211221010 in words is "twelve trillion, eleven billion, two hundred eleven million, two hundred twenty-one thousand, ten".