20202021200 has 30 divisors (see below), whose sum is σ = 48535356894. Its totient is φ = 8080808320.

The previous prime is 20202021199. The next prime is 20202021269. The reversal of 20202021200 is 212020202.

It can be written as a sum of positive squares in 3 ways, for example, as 514563856 + 19687457344 = 22684^2 + 140312^2 .

It is a congruent number.

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, 25252127 + ... + 25252926.

Almost surely, 2^20202021200 is an apocalyptic number.

20202021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202021200 is an abundant number, since it is smaller than the sum of its proper divisors (28333335694).

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

20202021200 is a wasteful number, since it uses less digits than its factorization.

20202021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50505071 (or 50505060 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 20202021200 its reverse (212020202), we get a palindrome (20414041402).

The spelling of 20202021200 in words is "twenty billion, two hundred two million, twenty-one thousand, two hundred".