12212221210 has 16 divisors (see below), whose sum is σ = 25122283776. Its totient is φ = 4187047248.

The previous prime is 12212221193. The next prime is 12212221213. The reversal of 12212221210 is 1212221221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12212221213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87230082 + ... + 87230221.

It is an arithmetic number, because the mean of its divisors is an integer number (1570142736).

Almost surely, 2^12212221210 is an apocalyptic number.

12212221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12212221210 is an abundant number, since it is smaller than the sum of its proper divisors (12910062566).

12212221210 is a wasteful number, since it uses less digits than its factorization.

12212221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174460317.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12212221210 its reverse (1212221221), we get a palindrome (13424442431).

The spelling of 12212221210 in words is "twelve billion, two hundred twelve million, two hundred twenty-one thousand, two hundred ten".