202221123320 has 64 divisors (see below), whose sum is σ = 466857699840. Its totient is φ = 78786432000.

The previous prime is 202221123311. The next prime is 202221123343. The reversal of 202221123320 is 23321122202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 202221123292 and 202221123301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 904745 + ... + 1105895.

It is an arithmetic number, because the mean of its divisors is an integer number (7294651560).

Almost surely, 2^202221123320 is an apocalyptic number.

202221123320 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 202221123320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233428849920).

202221123320 is an abundant number, since it is smaller than the sum of its proper divisors (264636576520).

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

202221123320 is a wasteful number, since it uses less digits than its factorization.

202221123320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201816 (or 201812 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 202221123320 its reverse (23321122202), we get a palindrome (225542245522).

The spelling of 202221123320 in words is "two hundred two billion, two hundred twenty-one million, one hundred twenty-three thousand, three hundred twenty".