12212021100101 has 4 divisors (see below), whose sum is σ = 12332932200204. Its totient is φ = 12091110000000.

The previous prime is 12212021100079. The next prime is 12212021100157. The reversal of 12212021100101 is 10100112021221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9691702922500 + 2520318177601 = 3113150^2 + 1587551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12212021100101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212021100161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60455549900 + ... + 60455550101.

It is an arithmetic number, because the mean of its divisors is an integer number (3083233050051).

Almost surely, 2^{12212021100101} is an apocalyptic number.

It is an amenable number.

12212021100101 is a deficient number, since it is larger than the sum of its proper divisors (120911100103).

12212021100101 is a wasteful number, since it uses less digits than its factorization.

12212021100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120911100102.

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

Adding to 12212021100101 its reverse (10100112021221), we get a palindrome (22312133121322).

The spelling of 12212021100101 in words is "twelve trillion, two hundred twelve billion, twenty-one million, one hundred thousand, one hundred one".