12100020101021 has 8 divisors (see below), whose sum is σ = 12753436933080. Its totient is φ = 11462348252992.

The previous prime is 12100020100991. The next prime is 12100020101051. The reversal of 12100020101021 is 12010102000121.

It is an interprime number because it is at equal distance from previous prime (12100020100991) and next prime (12100020101051).

It can be written as a sum of positive squares in 4 ways, for example, as 1534848432100 + 10565171668921 = 1238890^2 + 3250411^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12100020101021 - 2¹⁸ = 12100019838877 is a prime.

It is a super-2 number, since 2×12100020101021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12100020100993 and 12100020101011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100020101051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3936244430 + ... + 3936247503.

It is an arithmetic number, because the mean of its divisors is an integer number (1594179616635).

Almost surely, 2^{12100020101021} is an apocalyptic number.

It is an amenable number.

12100020101021 is a deficient number, since it is larger than the sum of its proper divisors (653416832059).

12100020101021 is an equidigital number, since it uses as much as digits as its factorization.

12100020101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7872492015.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12100020101021 its reverse (12010102000121), we get a palindrome (24110122101142).

The spelling of 12100020101021 in words is "twelve trillion, one hundred billion, twenty million, one hundred one thousand, twenty-one".