20001002200 has 48 divisors (see below), whose sum is σ = 47379757680. Its totient is φ = 7849445760.

The previous prime is 20001002191. The next prime is 20001002201. The reversal of 20001002200 is 220010002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001002201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 932844 + ... + 954043.

It is an arithmetic number, because the mean of its divisors is an integer number (987078285).

Almost surely, 2^20001002200 is an apocalyptic number.

20001002200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001002200 is an abundant number, since it is smaller than the sum of its proper divisors (27378755480).

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

20001002200 is a wasteful number, since it uses less digits than its factorization.

20001002200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886956 (or 1886947 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

Adding to 20001002200 its reverse (220010002), we get a palindrome (20221012202).

The spelling of 20001002200 in words is "twenty billion, one million, two thousand, two hundred".