20001200202 has 24 divisors (see below), whose sum is σ = 43586437284. Its totient is φ = 6628527744.

The previous prime is 20001200159. The next prime is 20001200209. The reversal of 20001200202 is 20200210002.

It can be written as a sum of positive squares in 2 ways, for example, as 17680754961 + 2320445241 = 132969^2 + 48171^2 .

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 (20001200209) 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, 3208383 + ... + 3214610.

Almost surely, 2^20001200202 is an apocalyptic number.

20001200202 is an abundant number, since it is smaller than the sum of its proper divisors (23585237082).

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

20001200202 is a wasteful number, since it uses less digits than its factorization.

20001200202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6423174 (or 6423171 counting only the distinct ones).

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

Adding to 20001200202 its reverse (20200210002), we get a palindrome (40201410204).

The spelling of 20001200202 in words is "twenty billion, one million, two hundred thousand, two hundred two".