1220440110 has 32 divisors (see below), whose sum is σ = 3083218560. Its totient is φ = 308321568.

The previous prime is 1220440093. The next prime is 1220440127. The reversal of 1220440110 is 110440221.

It is an interprime number because it is at equal distance from previous prime (1220440093) and next prime (1220440127).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1220440110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1069992 + ... + 1071131.

It is an arithmetic number, because the mean of its divisors is an integer number (96350580).

Almost surely, 2^1220440110 is an apocalyptic number.

1220440110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220440110 is an abundant number, since it is smaller than the sum of its proper divisors (1862778450).

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

1220440110 is a wasteful number, since it uses less digits than its factorization.

1220440110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141152.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1220440110 is about 34934.7979813824. The cubic root of 1220440110 is about 1068.6582039416.

Adding to 1220440110 its reverse (110440221), we get a palindrome (1330880331).

It can be divided in two parts, 1220 and 440110, that added together give a triangular number (441330 = T₉₃₉).

The spelling of 1220440110 in words is "one billion, two hundred twenty million, four hundred forty thousand, one hundred ten".