20002120020221 has 8 divisors (see below), whose sum is σ = 21054916096800. Its totient is φ = 18949329235440.

The previous prime is 20002120020131. The next prime is 20002120020227. The reversal of 20002120020221 is 12202002120002.

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

It is a cyclic number.

It is not a de Polignac number, because 20002120020221 - 2³⁴ = 19984940151037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20002120020196 and 20002120020205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002120020227) 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, 8189531 + ... + 10347591.

It is an arithmetic number, because the mean of its divisors is an integer number (2631864512100).

Almost surely, 2^{20002120020221} is an apocalyptic number.

It is an amenable number.

20002120020221 is a deficient number, since it is larger than the sum of its proper divisors (1052796076579).

20002120020221 is a wasteful number, since it uses less digits than its factorization.

20002120020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645899.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20002120020221 its reverse (12202002120002), we get a palindrome (32204122140223).

The spelling of 20002120020221 in words is "twenty trillion, two billion, one hundred twenty million, twenty thousand, two hundred twenty-one".