1200000220 has 12 divisors (see below), whose sum is σ = 2520000504. Its totient is φ = 480000080.

The previous prime is 1200000203. The next prime is 1200000227. The reversal of 1200000220 is 220000021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200000227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29999986 + ... + 30000025.

It is an arithmetic number, because the mean of its divisors is an integer number (210000042).

Almost surely, 2^1200000220 is an apocalyptic number.

1200000220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200000220 is an abundant number, since it is smaller than the sum of its proper divisors (1320000284).

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

1200000220 is a wasteful number, since it uses less digits than its factorization.

1200000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60000020 (or 60000018 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 1200000220 is about 34641.0193268039. The cubic root of 1200000220 is about 1062.6586341229.

Adding to 1200000220 its reverse (220000021), we get a palindrome (1420000241).

The spelling of 1200000220 in words is "one billion, two hundred million, two hundred twenty", and thus it is an aban number.