12100020101 has 4 divisors (see below), whose sum is σ = 13030790892. Its totient is φ = 11169249312.

The previous prime is 12100020073. The next prime is 12100020109. The reversal of 12100020101 is 10102000121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10102000121 = 13421 ⋅752701.

It can be written as a sum of positive squares in 2 ways, for example, as 1751841025 + 10348179076 = 41855^2 + 101726^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12100020101 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 (12100020109) 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, 465385376 + ... + 465385401.

It is an arithmetic number, because the mean of its divisors is an integer number (3257697723).

Almost surely, 2^12100020101 is an apocalyptic number.

It is an amenable number.

12100020101 is a deficient number, since it is larger than the sum of its proper divisors (930770791).

12100020101 is an equidigital number, since it uses as much as digits as its factorization.

12100020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930770790.

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

Adding to 12100020101 its reverse (10102000121), we get a palindrome (22202020222).

It can be divided in two parts, 12100020 and 101, that added together give a palindrome (12100121).

The spelling of 12100020101 in words is "twelve billion, one hundred million, twenty thousand, one hundred one".