12100001121021 has 16 divisors (see below), whose sum is σ = 17600385284928. Its totient is φ = 7333174156800.

The previous prime is 12100001121007. The next prime is 12100001121067. The reversal of 12100001121021 is 12012110000121.

It is not a de Polignac number, because 12100001121021 - 2³³ = 12091411186429 is a prime.

It is a super-3 number, since 3×12100001121021³ (a number of 40 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12100001120988 and 12100001121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100001121521) 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, 2450676 + ... + 5495981.

It is an arithmetic number, because the mean of its divisors is an integer number (1100024080308).

Almost surely, 2^{12100001121021} is an apocalyptic number.

12100001121021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12100001121021 is a deficient number, since it is larger than the sum of its proper divisors (5500384163907).

12100001121021 is a wasteful number, since it uses less digits than its factorization.

12100001121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7992812.

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

Adding to 12100001121021 its reverse (12012110000121), we get a palindrome (24112111121142).

The spelling of 12100001121021 in words is "twelve trillion, one hundred billion, one million, one hundred twenty-one thousand, twenty-one".