12100020200221 has 4 divisors (see below), whose sum is σ = 12100027499200. Its totient is φ = 12100012901244.

The previous prime is 12100020200183. The next prime is 12100020200249. The reversal of 12100020200221 is 12200202000121.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12100020200221 - 2¹⁵ = 12100020167453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100020200321) 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, 168790 + ... + 4922248.

It is an arithmetic number, because the mean of its divisors is an integer number (3025006874800).

Almost surely, 2^{12100020200221} is an apocalyptic number.

It is an amenable number.

12100020200221 is a deficient number, since it is larger than the sum of its proper divisors (7298979).

12100020200221 is an equidigital number, since it uses as much as digits as its factorization.

12100020200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7298978.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12100020200221 its reverse (12200202000121), we get a palindrome (24300222200342).

The spelling of 12100020200221 in words is "twelve trillion, one hundred billion, twenty million, two hundred thousand, two hundred twenty-one".