110221220 has 12 divisors (see below), whose sum is σ = 231464604. Its totient is φ = 44088480.

The previous prime is 110221211. The next prime is 110221229. The reversal of 110221220 is 22122011.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (110221211) and next prime (110221229).

It can be written as a sum of positive squares in 2 ways, for example, as 67108864 + 43112356 = 8192^2 + 6566^2 .

It is not an unprimeable number, because it can be changed into a prime (110221229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2755511 + ... + 2755550.

It is an arithmetic number, because the mean of its divisors is an integer number (19288717).

Almost surely, 2^110221220 is an apocalyptic number.

110221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

110221220 is an abundant number, since it is smaller than the sum of its proper divisors (121243384).

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

110221220 is a wasteful number, since it uses less digits than its factorization.

110221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5511070 (or 5511068 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 110221220 is about 10498.6294343595. The cubic root of 110221220 is about 479.4629699900.

Adding to 110221220 its reverse (22122011), we get a palindrome (132343231).

It can be divided in two parts, 1102 and 21220, that added together give a palindrome (22322).

The spelling of 110221220 in words is "one hundred ten million, two hundred twenty-one thousand, two hundred twenty".