12221000110 has 32 divisors (see below), whose sum is σ = 24771723264.
Its totient is φ = 4300644000.
The previous prime is 12221000081. The next prime is 12221000111. The reversal of 12221000110 is 1100012221.
It is a Harshad number since it is a multiple of its sum of digits (10).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12221000111) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1788526 + ... + 1795345.
It is an arithmetic number, because the mean of its divisors is an integer number (774116352).
Almost surely, 212221000110 is an apocalyptic number.
12221000110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
12221000110 is an abundant number, since it is smaller than the sum of its proper divisors (12550723154).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12221000110 is a wasteful number, since it uses less digits than its factorization.
12221000110 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3583920.
The product of its (nonzero) digits is 8, while the sum is 10.
Adding to 12221000110 its reverse (1100012221), we get a palindrome (13321012331).
It can be divided in two parts, 12 and 221000110, that added together give a palindrome (221000122).
The spelling of 12221000110 in words is "twelve billion, two hundred twenty-one million, one hundred ten", and thus it is an aban number.