12101001210221 has 32 divisors (see below), whose sum is σ = 15456710981376. Its totient is φ = 9198311616000.

The previous prime is 12101001210169. The next prime is 12101001210299. The reversal of 12101001210221 is 12201210010121.

It is a cyclic number.

It is not a de Polignac number, because 12101001210221 - 2²² = 12100997015917 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12101001210196 and 12101001210205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101001210121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27859691 + ... + 28290711.

It is an arithmetic number, because the mean of its divisors is an integer number (483022218168).

Almost surely, 2^{12101001210221} is an apocalyptic number.

12101001210221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12101001210221 is a deficient number, since it is larger than the sum of its proper divisors (3355709771155).

12101001210221 is a wasteful number, since it uses less digits than its factorization.

12101001210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439973.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12101001210221 its reverse (12201210010121), we get a palindrome (24302211220342).

The spelling of 12101001210221 in words is "twelve trillion, one hundred one billion, one million, two hundred ten thousand, two hundred twenty-one".