220102122222 has 72 divisors (see below), whose sum is σ = 490601494656. Its totient is φ = 71315109504.

The previous prime is 220102122221. The next prime is 220102122269. The reversal of 220102122222 is 222221201022.

220102122222 is a `hidden beast` number, since 220 + 10 + 212 + 2 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 220102122195 and 220102122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220102122221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 29394163 + ... + 29401649.

It is an arithmetic number, because the mean of its divisors is an integer number (6813909648).

Almost surely, 2^220102122222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220102122222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245300747328).

220102122222 is an abundant number, since it is smaller than the sum of its proper divisors (270499372434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220102122222 is a wasteful number, since it uses less digits than its factorization.

220102122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8762 (or 8722 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 220102122222 its reverse (222221201022), we get a palindrome (442323323244).

The spelling of 220102122222 in words is "two hundred twenty billion, one hundred two million, one hundred twenty-two thousand, two hundred twenty-two".