200012221100 has 72 divisors (see below), whose sum is σ = 437723286000. Its totient is φ = 79325395200.

The previous prime is 200012221091. The next prime is 200012221109. The reversal of 200012221100 is 1122210002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (200012221091) and next prime (200012221109).

It is a super-4 number, since 4×200012221100⁴ (a number of 46 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (200012221109) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 8496146 + ... + 8519654.

Almost surely, 2^200012221100 is an apocalyptic number.

200012221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200012221100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218861643000).

200012221100 is an abundant number, since it is smaller than the sum of its proper divisors (237711064900).

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

200012221100 is a wasteful number, since it uses less digits than its factorization.

200012221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24243 (or 24236 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 200012221100 its reverse (1122210002), we get a palindrome (201134431102).

The spelling of 200012221100 in words is "two hundred billion, twelve million, two hundred twenty-one thousand, one hundred".