2122000020221 has 4 divisors (see below), whose sum is σ = 2129498253792. Its totient is φ = 2114501786652.

The previous prime is 2122000020209. The next prime is 2122000020223. The reversal of 2122000020221 is 1220200002212.

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 2122000020221 - 2⁶ = 2122000020157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2122000020196 and 2122000020205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122000020223) 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, 3749116361 + ... + 3749116926.

It is an arithmetic number, because the mean of its divisors is an integer number (532374563448).

Almost surely, 2^{2122000020221} is an apocalyptic number.

It is an amenable number.

2122000020221 is a deficient number, since it is larger than the sum of its proper divisors (7498233571).

2122000020221 is an equidigital number, since it uses as much as digits as its factorization.

2122000020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7498233570.

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

Adding to 2122000020221 its reverse (1220200002212), we get a palindrome (3342200022433).

The spelling of 2122000020221 in words is "two trillion, one hundred twenty-two billion, twenty thousand, two hundred twenty-one".