20011100120201 has 4 divisors (see below), whose sum is σ = 20011128063504. Its totient is φ = 20011072176900.

The previous prime is 20011100120159. The next prime is 20011100120203. The reversal of 20011100120201 is 10202100111002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20011100120201 - 2¹⁰ = 20011100119177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20011100120203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12868415 + ... + 14339396.

It is an arithmetic number, because the mean of its divisors is an integer number (5002782015876).

Almost surely, 2^{20011100120201} is an apocalyptic number.

It is an amenable number.

20011100120201 is a deficient number, since it is larger than the sum of its proper divisors (27943303).

20011100120201 is an equidigital number, since it uses as much as digits as its factorization.

20011100120201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27943302.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20011100120201 its reverse (10202100111002), we get a palindrome (30213200231203).

The spelling of 20011100120201 in words is "twenty trillion, eleven billion, one hundred million, one hundred twenty thousand, two hundred one".