122220200221 has 4 divisors (see below), whose sum is σ = 139680228832. Its totient is φ = 104760171612.

The previous prime is 122220200209. The next prime is 122220200257. The reversal of 122220200221 is 122002022221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 122002022221 = 937 ⋅130204933.

It is a cyclic number.

It is not a de Polignac number, because 122220200221 - 2⁷ = 122220200093 is a prime.

It is a super-2 number, since 2×122220200221² (a number of 23 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 = 122220200195 and 122220200204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122220200521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8730014295 + ... + 8730014308.

It is an arithmetic number, because the mean of its divisors is an integer number (34920057208).

Almost surely, 2^122220200221 is an apocalyptic number.

It is an amenable number.

122220200221 is a deficient number, since it is larger than the sum of its proper divisors (17460028611).

122220200221 is an equidigital number, since it uses as much as digits as its factorization.

122220200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17460028610.

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

Adding to 122220200221 its reverse (122002022221), we get a palindrome (244222222442).

The spelling of 122220200221 in words is "one hundred twenty-two billion, two hundred twenty million, two hundred thousand, two hundred twenty-one".