110212221221 has 8 divisors (see below), whose sum is σ = 111692310240. Its totient is φ = 108735756912.

The previous prime is 110212221193. The next prime is 110212221247. The reversal of 110212221221 is 122122212011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110212221221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 110212221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110212221281) 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, 844931 + ... + 966608.

It is an arithmetic number, because the mean of its divisors is an integer number (13961538780).

Almost surely, 2^110212221221 is an apocalyptic number.

It is an amenable number.

110212221221 is a deficient number, since it is larger than the sum of its proper divisors (1480089019).

110212221221 is an equidigital number, since it uses as much as digits as its factorization.

110212221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812355.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 110212221221 its reverse (122122212011), we get a palindrome (232334433232).

The spelling of 110212221221 in words is "one hundred ten billion, two hundred twelve million, two hundred twenty-one thousand, two hundred twenty-one".