20001222200 has 24 divisors (see below), whose sum is σ = 46502842080. Its totient is φ = 8000488800.

The previous prime is 20001222161. The next prime is 20001222217. The reversal of 20001222200 is 222210002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50002856 + ... + 50003255.

It is an arithmetic number, because the mean of its divisors is an integer number (1937618420).

Almost surely, 2^20001222200 is an apocalyptic number.

20001222200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001222200 is an abundant number, since it is smaller than the sum of its proper divisors (26501619880).

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

20001222200 is a wasteful number, since it uses less digits than its factorization.

20001222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100006127 (or 100006118 counting only the distinct ones).

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

Adding to 20001222200 its reverse (222210002), we get a palindrome (20223432202).

The spelling of 20001222200 in words is "twenty billion, one million, two hundred twenty-two thousand, two hundred".