12100201021021 has 4 divisors (see below), whose sum is σ = 12100317407200. Its totient is φ = 12100084634844.

The previous prime is 12100201021009. The next prime is 12100201021049. The reversal of 12100201021021 is 12012010200121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12100201021021 - 2⁵ = 12100201020989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12100201020992 and 12100201021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100201021091) 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 3 ways as a sum of consecutive naturals, for example, 58037001 + ... + 58245118.

It is an arithmetic number, because the mean of its divisors is an integer number (3025079351800).

Almost surely, 2^{12100201021021} is an apocalyptic number.

It is an amenable number.

12100201021021 is a deficient number, since it is larger than the sum of its proper divisors (116386179).

12100201021021 is a wasteful number, since it uses less digits than its factorization.

12100201021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116386178.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12100201021021 its reverse (12012010200121), we get a palindrome (24112211221142).

The spelling of 12100201021021 in words is "twelve trillion, one hundred billion, two hundred one million, twenty-one thousand, twenty-one".