1222020200 has 24 divisors (see below), whose sum is σ = 2841197430. Its totient is φ = 488808000.

The previous prime is 1222020187. The next prime is 1222020203. The reversal of 1222020200 is 20202221.

It can be written as a sum of positive squares in 3 ways, for example, as 690533284 + 531486916 = 26278^2 + 23054^2 .

It is not an unprimeable number, because it can be changed into a prime (1222020203) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 3054851 + ... + 3055250.

Almost surely, 2^1222020200 is an apocalyptic number.

1222020200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222020200 is an abundant number, since it is smaller than the sum of its proper divisors (1619177230).

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

1222020200 is a wasteful number, since it uses less digits than its factorization.

1222020200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6110117 (or 6110108 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 1222020200 is about 34957.4055101348. The cubic root of 1222020200 is about 1069.1191982787.

Adding to 1222020200 its reverse (20202221), we get a palindrome (1242222421).

The spelling of 1222020200 in words is "one billion, two hundred twenty-two million, twenty thousand, two hundred".