12020100101 has 4 divisors (see below), whose sum is σ = 12020438112. Its totient is φ = 12019762092.

The previous prime is 12020100091. The next prime is 12020100139. The reversal of 12020100101 is 10100102021.

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 a de Polignac number, because none of the positive numbers 2^k-12020100101 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 (12020100151) 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, 108425 + ... + 189198.

It is an arithmetic number, because the mean of its divisors is an integer number (3005109528).

Almost surely, 2^12020100101 is an apocalyptic number.

It is an amenable number.

12020100101 is a deficient number, since it is larger than the sum of its proper divisors (338011).

12020100101 is an equidigital number, since it uses as much as digits as its factorization.

12020100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338010.

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

Adding to 12020100101 its reverse (10100102021), we get a palindrome (22120202122).

The spelling of 12020100101 in words is "twelve billion, twenty million, one hundred thousand, one hundred one".