2022222021221 has 8 divisors (see below), whose sum is σ = 2149321312320. Its totient is φ = 1897189385472.

The previous prime is 2022222021217. The next prime is 2022222021223. The reversal of 2022222021221 is 1221202222202.

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 2022222021221 - 2² = 2022222021217 is a prime.

It is a super-2 number, since 2×2022222021221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2022222021193 and 2022222021202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2022222021223) 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, 516661820 + ... + 516665733.

It is an arithmetic number, because the mean of its divisors is an integer number (268665164040).

Almost surely, 2^{2022222021221} is an apocalyptic number.

It is an amenable number.

2022222021221 is a deficient number, since it is larger than the sum of its proper divisors (127099291099).

2022222021221 is a wasteful number, since it uses less digits than its factorization.

2022222021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033327675.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 2022222021221 its reverse (1221202222202), we get a palindrome (3243424243423).

The spelling of 2022222021221 in words is "two trillion, twenty-two billion, two hundred twenty-two million, twenty-one thousand, two hundred twenty-one".