12100021022101 has 4 divisors (see below), whose sum is σ = 12177091219852. Its totient is φ = 12022950824352.

The previous prime is 12100021022099. The next prime is 12100021022179. The reversal of 12100021022101 is 10122012000121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5542606067076 + 6557414955025 = 2354274^2 + 2560745^2 .

It is a cyclic number.

It is not a de Polignac number, because 12100021022101 - 2¹ = 12100021022099 is a prime.

It is a super-2 number, since 2×12100021022101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100021052101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38535098640 + ... + 38535098953.

It is an arithmetic number, because the mean of its divisors is an integer number (3044272804963).

Almost surely, 2^{12100021022101} is an apocalyptic number.

It is an amenable number.

12100021022101 is a deficient number, since it is larger than the sum of its proper divisors (77070197751).

12100021022101 is an equidigital number, since it uses as much as digits as its factorization.

12100021022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77070197750.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12100021022101 its reverse (10122012000121), we get a palindrome (22222033022222).

The spelling of 12100021022101 in words is "twelve trillion, one hundred billion, twenty-one million, twenty-two thousand, one hundred one".