12100012110021 has 16 divisors (see below), whose sum is σ = 18167760119808. Its totient is φ = 7096781295600.

The previous prime is 12100012110019. The next prime is 12100012110023. The reversal of 12100012110021 is 12001121000121.

It is an interprime number because it is at equal distance from previous prime (12100012110019) and next prime (12100012110023).

It is not a de Polignac number, because 12100012110021 - 2¹ = 12100012110019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12100012109979 and 12100012110006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100012110023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5913983391 + ... + 5913985436.

It is an arithmetic number, because the mean of its divisors is an integer number (1135485007488).

Almost surely, 2^{12100012110021} is an apocalyptic number.

12100012110021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12100012110021 is a deficient number, since it is larger than the sum of its proper divisors (6067748009787).

12100012110021 is a wasteful number, since it uses less digits than its factorization.

12100012110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11827968872.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12100012110021 its reverse (12001121000121), we get a palindrome (24101133110142).

The spelling of 12100012110021 in words is "twelve trillion, one hundred billion, twelve million, one hundred ten thousand, twenty-one".