20222231200 has 72 divisors (see below), whose sum is σ = 49623691068. Its totient is φ = 8046919680.

The previous prime is 20222231167. The next prime is 20222231243. The reversal of 20222231200 is 213222202.

It can be written as a sum of positive squares in 6 ways, for example, as 9473518224 + 10748712976 = 97332^2 + 103676^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88914 + ... + 219886.

Almost surely, 2^20222231200 is an apocalyptic number.

20222231200 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 20222231200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24811845534).

20222231200 is an abundant number, since it is smaller than the sum of its proper divisors (29401459868).

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

20222231200 is a wasteful number, since it uses less digits than its factorization.

20222231200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131186 (or 131173 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20222231200 its reverse (213222202), we get a palindrome (20435453402).

The spelling of 20222231200 in words is "twenty billion, two hundred twenty-two million, two hundred thirty-one thousand, two hundred".