221212220112010 has 16 divisors (see below), whose sum is σ = 398194301923200. Its totient is φ = 88482153440016.

The previous prime is 221212220111989. The next prime is 221212220112043. The reversal of 221212220112010 is 10211022212122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341485830 + ... + 342133009.

It is an arithmetic number, because the mean of its divisors is an integer number (24887143870200).

Almost surely, 2^{221212220112010} is an apocalyptic number.

221212220112010 is a deficient number, since it is larger than the sum of its proper divisors (176982081811190).

221212220112010 is a wasteful number, since it uses less digits than its factorization.

221212220112010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683651205.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221212220112010 its reverse (10211022212122), we get a palindrome (231423242324132).

The spelling of 221212220112010 in words is "two hundred twenty-one trillion, two hundred twelve billion, two hundred twenty million, one hundred twelve thousand, ten".