12020100010101 has 20 divisors (see below), whose sum is σ = 18055156042924. Its totient is φ = 7969127068800.

The previous prime is 12020100010063. The next prime is 12020100010133. The reversal of 12020100010101 is 10101000102021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2266183998225 + 9753916011876 = 1505385^2 + 3123126^2 .

It is not a de Polignac number, because 12020100010101 - 2³⁸ = 11745222103157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020100010181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 409919860 + ... + 409949181.

Almost surely, 2^{12020100010101} is an apocalyptic number.

It is an amenable number.

12020100010101 is a deficient number, since it is larger than the sum of its proper divisors (6035056032823).

12020100010101 is an equidigital number, since it uses as much as digits as its factorization.

12020100010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819869234 (or 819869225 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 12020100010101 its reverse (10101000102021), we get a palindrome (22121100112122).

The spelling of 12020100010101 in words is "twelve trillion, twenty billion, one hundred million, ten thousand, one hundred one".