20011133200 has 30 divisors (see below), whose sum is σ = 48076748474. Its totient is φ = 8004453120.

The previous prime is 20011133189. The next prime is 20011133201. The reversal of 20011133200 is 233111002.

It can be written as a sum of positive squares in 3 ways, for example, as 5794863376 + 14216269824 = 76124^2 + 119232^2 .

It is not an unprimeable number, because it can be changed into a prime (20011133201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25013517 + ... + 25014316.

Almost surely, 2^20011133200 is an apocalyptic number.

20011133200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011133200 is an abundant number, since it is smaller than the sum of its proper divisors (28065615274).

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

20011133200 is a wasteful number, since it uses less digits than its factorization.

20011133200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50027851 (or 50027840 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20011133200 its reverse (233111002), we get a palindrome (20244244202).

The spelling of 20011133200 in words is "twenty billion, eleven million, one hundred thirty-three thousand, two hundred".