20012200200 has 120 divisors (see below), whose sum is σ = 69505392330. Its totient is φ = 5336582400.

The previous prime is 20012200193. The next prime is 20012200207. The reversal of 20012200200 is 200221002.

It is an interprime number because it is at equal distance from previous prime (20012200193) and next prime (20012200207).

It can be written as a sum of positive squares in 3 ways, for example, as 7833312036 + 12178888164 = 88506^2 + 110358^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20012200207) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 601461 + ... + 633860.

Almost surely, 2^20012200200 is an apocalyptic number.

20012200200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012200200 is an abundant number, since it is smaller than the sum of its proper divisors (49493192130).

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

20012200200 is a wasteful number, since it uses less digits than its factorization.

20012200200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235349 (or 1235331 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20012200200 its reverse (200221002), we get a palindrome (20212421202).

The spelling of 20012200200 in words is "twenty billion, twelve million, two hundred thousand, two hundred".