20011200101 has 4 divisors (see below), whose sum is σ = 20011610304. Its totient is φ = 20010789900.

The previous prime is 20011200067. The next prime is 20011200113. The reversal of 20011200101 is 10100211002.

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 20011200101 - 2¹⁰ = 20011199077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011250101) 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, 120215 + ... + 233396.

It is an arithmetic number, because the mean of its divisors is an integer number (5002902576).

Almost surely, 2^20011200101 is an apocalyptic number.

It is an amenable number.

20011200101 is a deficient number, since it is larger than the sum of its proper divisors (410203).

20011200101 is an equidigital number, since it uses as much as digits as its factorization.

20011200101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410202.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20011200101 its reverse (10100211002), we get a palindrome (30111411103).

The spelling of 20011200101 in words is "twenty billion, eleven million, two hundred thousand, one hundred one".