220002212221 has 24 divisors (see below), whose sum is σ = 242478279680. Its totient is φ = 199458974880.

The previous prime is 220002212203. The next prime is 220002212263. The reversal of 220002212221 is 122212200022.

It is not a de Polignac number, because 220002212221 - 2⁵ = 220002212189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220002212195 and 220002212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220002212291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98258020 + ... + 98260258.

Almost surely, 2^220002212221 is an apocalyptic number.

It is an amenable number.

220002212221 is a deficient number, since it is larger than the sum of its proper divisors (22476067459).

220002212221 is a wasteful number, since it uses less digits than its factorization.

220002212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4105 (or 4094 counting only the distinct ones).

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

Adding to 220002212221 its reverse (122212200022), we get a palindrome (342214412243).

It can be divided in two parts, 2200022 and 12221, that multiplied together give a palindrome (26886468862).

The spelling of 220002212221 in words is "two hundred twenty billion, two million, two hundred twelve thousand, two hundred twenty-one".