1331220200 has 24 divisors (see below), whose sum is σ = 3095087430. Its totient is φ = 532488000.

The previous prime is 1331220181. The next prime is 1331220269. The reversal of 1331220200 is 20221331.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1273490596 + 57729604 = 35686^2 + 7598^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 3327851 + ... + 3328250.

Almost surely, 2^1331220200 is an apocalyptic number.

1331220200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331220200 is an abundant number, since it is smaller than the sum of its proper divisors (1763867230).

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

1331220200 is a wasteful number, since it uses less digits than its factorization.

1331220200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6656117 (or 6656108 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1331220200 is about 36485.8904235596. The cubic root of 1331220200 is about 1100.0606578121.

Adding to 1331220200 its reverse (20221331), we get a palindrome (1351441531).

The spelling of 1331220200 in words is "one billion, three hundred thirty-one million, two hundred twenty thousand, two hundred".