20222201020 has 72 divisors (see below), whose sum is σ = 49853422080. Its totient is φ = 6869681280.

The previous prime is 20222201017. The next prime is 20222201071. The reversal of 20222201020 is 2010222202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12165 + ... + 201475.

It is an arithmetic number, because the mean of its divisors is an integer number (692408640).

Almost surely, 2^20222201020 is an apocalyptic number.

20222201020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20222201020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24926711040).

20222201020 is an abundant number, since it is smaller than the sum of its proper divisors (29631221060).

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

20222201020 is a wasteful number, since it uses less digits than its factorization.

20222201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189443 (or 189434 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20222201020 its reverse (2010222202), we get a palindrome (22232423222).

The spelling of 20222201020 in words is "twenty billion, two hundred twenty-two million, two hundred one thousand, twenty".