1000000220220 has 72 divisors (see below), whose sum is σ = 3131183502720. Its totient is φ = 258064571520.

The previous prime is 1000000220209. The next prime is 1000000220221. The reversal of 1000000220220 is 220220000001.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000000220221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89600175 + ... + 89611334.

It is an arithmetic number, because the mean of its divisors is an integer number (43488659760).

Almost surely, 2^{1000000220220} is an apocalyptic number.

1000000220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000000220220 is an abundant number, since it is smaller than the sum of its proper divisors (2131183282500).

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

1000000220220 is a wasteful number, since it uses less digits than its factorization.

1000000220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179211555 (or 179211550 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 1000000220220 its reverse (220220000001), we get a palindrome (1220220220221).

The spelling of 1000000220220 in words is "one trillion, two hundred twenty thousand, two hundred twenty".