12220110 has 144 divisors (see below), whose sum is σ = 39373776. Its totient is φ = 2612736.

The previous prime is 12220081. The next prime is 12220111. The reversal of 12220110 is 1102221.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 12220092 and 12220101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220111) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 74889 + ... + 75051.

It is an arithmetic number, because the mean of its divisors is an integer number (273429).

Almost surely, 2^12220110 is an apocalyptic number.

12220110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12220110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19686888).

12220110 is an abundant number, since it is smaller than the sum of its proper divisors (27153666).

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

12220110 is a wasteful number, since it uses less digits than its factorization.

12220110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 12220110 is about 3495.7273921174. The cubic root of 12220110 is about 230.3341708273.

Adding to 12220110 its reverse (1102221), we get a palindrome (13322331).

The spelling of 12220110 in words is "twelve million, two hundred twenty thousand, one hundred ten".