1220110110 has 24 divisors (see below), whose sum is σ = 3172286520. Its totient is φ = 325362672.

The previous prime is 1220110109. The next prime is 1220110117. The reversal of 1220110110 is 110110221.

It is a happy number.

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 = 1220110092 and 1220110101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220110117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6778300 + ... + 6778479.

It is an arithmetic number, because the mean of its divisors is an integer number (132178605).

Almost surely, 2^1220110110 is an apocalyptic number.

1220110110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220110110 is an abundant number, since it is smaller than the sum of its proper divisors (1952176410).

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

1220110110 is a wasteful number, since it uses less digits than its factorization.

1220110110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13556792 (or 13556789 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1220110110 is about 34930.0745776473. The cubic root of 1220110110 is about 1068.5618755776.

Adding to 1220110110 its reverse (110110221), we get a palindrome (1330220331).

The spelling of 1220110110 in words is "one billion, two hundred twenty million, one hundred ten thousand, one hundred ten".