20011100201200 has 30 divisors (see below), whose sum is σ = 48076668234344. Its totient is φ = 8004440080320.

The previous prime is 20011100201173. The next prime is 20011100201227. The reversal of 20011100201200 is 210200111002.

It is an interprime number because it is at equal distance from previous prime (20011100201173) and next prime (20011100201227).

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 25013874852 + ... + 25013875651.

Almost surely, 2^{20011100201200} is an apocalyptic number.

20011100201200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011100201200 is an abundant number, since it is smaller than the sum of its proper divisors (28065568033144).

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

20011100201200 is a wasteful number, since it uses less digits than its factorization.

20011100201200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50027750521 (or 50027750510 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20011100201200 its reverse (210200111002), we get a palindrome (20221300312202).

The spelling of 20011100201200 in words is "twenty trillion, eleven billion, one hundred million, two hundred one thousand, two hundred".