20201223222 has 48 divisors (see below), whose sum is σ = 46402392192. Its totient is φ = 6340394880.

The previous prime is 20201223221. The next prime is 20201223269. The reversal of 20201223222 is 22232210202.

20201223222 is a `hidden beast` number, since 20 + 201 + 223 + 222 = 666.

It is a super-2 number, since 2×20201223222² (a number of 21 digits) contains 22 as substring.

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 = 20201223195 and 20201223204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201223221) 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, 468583 + ... + 509874.

It is an arithmetic number, because the mean of its divisors is an integer number (966716504).

Almost surely, 2^20201223222 is an apocalyptic number.

20201223222 is an abundant number, since it is smaller than the sum of its proper divisors (26201168970).

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

20201223222 is a wasteful number, since it uses less digits than its factorization.

20201223222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978533 (or 978530 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 20201223222 its reverse (22232210202), we get a palindrome (42433433424).

The spelling of 20201223222 in words is "twenty billion, two hundred one million, two hundred twenty-three thousand, two hundred twenty-two".