20223220220221 has 16 divisors (see below), whose sum is σ = 20405245512960. Its totient is φ = 20041714114560.

The previous prime is 20223220220209. The next prime is 20223220220251. The reversal of 20223220220221 is 12202202232202.

It is a cyclic number.

It is not a de Polignac number, because 20223220220221 - 2²⁵ = 20223186665789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20223220220192 and 20223220220201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20223220220251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281361930 + ... + 281433796.

It is an arithmetic number, because the mean of its divisors is an integer number (1275327844560).

Almost surely, 2^{20223220220221} is an apocalyptic number.

It is an amenable number.

20223220220221 is a deficient number, since it is larger than the sum of its proper divisors (182025292739).

20223220220221 is a wasteful number, since it uses less digits than its factorization.

20223220220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75444.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 20223220220221 its reverse (12202202232202), we get a palindrome (32425422452423).

The spelling of 20223220220221 in words is "twenty trillion, two hundred twenty-three billion, two hundred twenty million, two hundred twenty thousand, two hundred twenty-one".