220021020212 has 48 divisors (see below), whose sum is σ = 448916791680. Its totient is φ = 92397532032.

The previous prime is 220021020211. The next prime is 220021020221. The reversal of 220021020212 is 212020120022.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220021020211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1073714 + ... + 1262102.

It is an arithmetic number, because the mean of its divisors is an integer number (9352433160).

Almost surely, 2^220021020212 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 220021020212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224458395840).

220021020212 is an abundant number, since it is smaller than the sum of its proper divisors (228895771468).

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

220021020212 is a wasteful number, since it uses less digits than its factorization.

220021020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189240 (or 189238 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 220021020212 its reverse (212020120022), we get a palindrome (432041140234).

The spelling of 220021020212 in words is "two hundred twenty billion, twenty-one million, twenty thousand, two hundred twelve".