2022001220221 has 4 divisors (see below), whose sum is σ = 2022020032032. Its totient is φ = 2021982408412.

The previous prime is 2022001220219. The next prime is 2022001220231. The reversal of 2022001220221 is 1220221002202.

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 2022001220221 - 2¹ = 2022001220219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2022001220195 and 2022001220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2022001220231) 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, 9243745 + ... + 9459958.

It is an arithmetic number, because the mean of its divisors is an integer number (505505008008).

Almost surely, 2^{2022001220221} is an apocalyptic number.

It is an amenable number.

2022001220221 is a deficient number, since it is larger than the sum of its proper divisors (18811811).

2022001220221 is a wasteful number, since it uses less digits than its factorization.

2022001220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18811810.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2022001220221 its reverse (1220221002202), we get a palindrome (3242222222423).

The spelling of 2022001220221 in words is "two trillion, twenty-two billion, one million, two hundred twenty thousand, two hundred twenty-one".