20011020200 has 24 divisors (see below), whose sum is σ = 46525622430. Its totient is φ = 8004408000.

The previous prime is 20011020199. The next prime is 20011020221. The reversal of 20011020200 is 202011002.

It can be written as a sum of positive squares in 3 ways, for example, as 17934030724 + 2076989476 = 133918^2 + 45574^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

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, 50027351 + ... + 50027750.

Almost surely, 2^20011020200 is an apocalyptic number.

20011020200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011020200 is an abundant number, since it is smaller than the sum of its proper divisors (26514602230).

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

20011020200 is a wasteful number, since it uses less digits than its factorization.

20011020200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100055117 (or 100055108 counting only the distinct ones).

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

Adding to 20011020200 its reverse (202011002), we get a palindrome (20213031202).

It can be divided in two parts, 2001 and 1020200, that added together give a palindrome (1022201).

The spelling of 20011020200 in words is "twenty billion, eleven million, twenty thousand, two hundred".