220222012122 has 288 divisors, whose sum is σ = 578045445120. Its totient is φ = 60380873280.

The previous prime is 220222012117. The next prime is 220222012133. The reversal of 220222012122 is 221210222022.

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 = 220222012095 and 220222012104.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 581060529 + ... + 581060907.

It is an arithmetic number, because the mean of its divisors is an integer number (2007102240).

Almost surely, 2^220222012122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220222012122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289022722560).

220222012122 is an abundant number, since it is smaller than the sum of its proper divisors (357823432998).

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

220222012122 is a wasteful number, since it uses less digits than its factorization.

220222012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686 (or 676 counting only the distinct ones).

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

Adding to 220222012122 its reverse (221210222022), we get a palindrome (441432234144).

The spelling of 220222012122 in words is "two hundred twenty billion, two hundred twenty-two million, twelve thousand, one hundred twenty-two".