1220110110220 has 72 divisors (see below), whose sum is σ = 2610984698784. Its totient is φ = 478922552064.

The previous prime is 1220110110173. The next prime is 1220110110227. The reversal of 1220110110220 is 220110110221.

It is a super-2 number, since 2×1220110110220² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1220110110220.

It is not an unprimeable number, because it can be changed into a prime (1220110110227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23586304 + ... + 23637976.

It is an arithmetic number, because the mean of its divisors is an integer number (36263676372).

Almost surely, 2^{1220110110220} is an apocalyptic number.

1220110110220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220110110220 is an abundant number, since it is smaller than the sum of its proper divisors (1390874588564).

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

1220110110220 is a wasteful number, since it uses less digits than its factorization.

1220110110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52079 (or 52010 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1220110110220 its reverse (220110110221), we get a palindrome (1440220220441).

Subtracting from 1220110110220 its reverse (220110110221), we obtain a palindrome (999999999999).

The spelling of 1220110110220 in words is "one trillion, two hundred twenty billion, one hundred ten million, one hundred ten thousand, two hundred twenty".