12101213202021 has 12 divisors (see below), whose sum is σ = 17617164278272. Its totient is φ = 8003952038376.

The previous prime is 12101213201947. The next prime is 12101213202119. The reversal of 12101213202021 is 12020231210121.

12101213202021 is a `hidden beast` number, since 1 + 21 + 0 + 121 + 320 + 202 + 1 = 666.

It is not a de Polignac number, because 12101213202021 - 2¹⁰ = 12101213200997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12101213201985 and 12101213202003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101213202521) 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 11 ways as a sum of consecutive naturals, for example, 5293617931 + ... + 5293620216.

Almost surely, 2^{12101213202021} is an apocalyptic number.

It is an amenable number.

12101213202021 is a deficient number, since it is larger than the sum of its proper divisors (5515951076251).

12101213202021 is a wasteful number, since it uses less digits than its factorization.

12101213202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10587238280 (or 10587238277 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12101213202021 its reverse (12020231210121), we get a palindrome (24121444412142).

The spelling of 12101213202021 in words is "twelve trillion, one hundred one billion, two hundred thirteen million, two hundred two thousand, twenty-one".