20120002000221 has 8 divisors (see below), whose sum is σ = 26826749648320. Its totient is φ = 13413294509472.

The previous prime is 20120002000187. The next prime is 20120002000291. The reversal of 20120002000221 is 12200020002102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20120002000221 - 2⁹ = 20120001999709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20120002000197 and 20120002000206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120002000291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8850145 + ... + 10888758.

It is an arithmetic number, because the mean of its divisors is an integer number (3353343706040).

Almost surely, 2^{20120002000221} is an apocalyptic number.

It is an amenable number.

20120002000221 is a deficient number, since it is larger than the sum of its proper divisors (6706747648099).

20120002000221 is a wasteful number, since it uses less digits than its factorization.

20120002000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20078675.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20120002000221 its reverse (12200020002102), we get a palindrome (32320022002323).

The spelling of 20120002000221 in words is "twenty trillion, one hundred twenty billion, two million, two hundred twenty-one", and thus it is an aban number.