1220020200 has 144 divisors (see below), whose sum is σ = 4682602080. Its totient is φ = 278858880.

The previous prime is 1220020199. The next prime is 1220020247. The reversal of 1220020200 is 20200221.

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

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 35814 + ... + 61013.

It is an arithmetic number, because the mean of its divisors is an integer number (32518070).

Almost surely, 2^1220020200 is an apocalyptic number.

1220020200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220020200 is an abundant number, since it is smaller than the sum of its proper divisors (3462581880).

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

1220020200 is a wasteful number, since it uses less digits than its factorization.

1220020200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96856 (or 96844 counting only the distinct ones).

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

The square root of 1220020200 is about 34928.7875541079. The cubic root of 1220020200 is about 1068.5356274662.

Adding to 1220020200 its reverse (20200221), we get a palindrome (1240220421).

It can be divided in two parts, 12200 and 20200, that added together give a square (32400 = 180²).

The spelling of 1220020200 in words is "one billion, two hundred twenty million, twenty thousand, two hundred".