2001220222200 has 96 divisors (see below), whose sum is σ = 6568711115760. Its totient is φ = 502267033600.

The previous prime is 2001220222193. The next prime is 2001220222207. The reversal of 2001220222200 is 22220221002.

It is an interprime number because it is at equal distance from previous prime (2001220222193) and next prime (2001220222207).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2001220222200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001220222207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98088831 + ... + 98109230.

Almost surely, 2^{2001220222200} is an apocalyptic number.

2001220222200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001220222200 is an abundant number, since it is smaller than the sum of its proper divisors (4567490893560).

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

2001220222200 is a wasteful number, since it uses less digits than its factorization.

2001220222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196198097 (or 196198088 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 2001220222200 its reverse (22220221002), we get a palindrome (2023440443202).

The spelling of 2001220222200 in words is "two trillion, one billion, two hundred twenty million, two hundred twenty-two thousand, two hundred".