220010323212 has 72 divisors (see below), whose sum is σ = 565570343520. Its totient is φ = 72099313920.

The previous prime is 220010323207. The next prime is 220010323213. The reversal of 220010323212 is 212323010022.

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

It is not an unprimeable number, because it can be changed into a prime (220010323213) 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, 682714 + ... + 951902.

It is an arithmetic number, because the mean of its divisors is an integer number (7855143660).

Almost surely, 2^220010323212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220010323212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282785171760).

220010323212 is an abundant number, since it is smaller than the sum of its proper divisors (345560020308).

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

220010323212 is a wasteful number, since it uses less digits than its factorization.

220010323212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269583 (or 269578 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 220010323212 its reverse (212323010022), we get a palindrome (432333333234).

The spelling of 220010323212 in words is "two hundred twenty billion, ten million, three hundred twenty-three thousand, two hundred twelve".