202212221121220 has 24 divisors (see below), whose sum is σ = 428850076877208. Its totient is φ = 80084047968000.

The previous prime is 202212221121203. The next prime is 202212221121247. The reversal of 202212221121220 is 22121122212202.

It can be written as a sum of positive squares in 4 ways, for example, as 120362709348036 + 81849511773184 = 10970994^2 + 9047072^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202212221121191 and 202212221121200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50052527961 + ... + 50052532000.

It is an arithmetic number, because the mean of its divisors is an integer number (17868753203217).

Almost surely, 2^{202212221121220} is an apocalyptic number.

202212221121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202212221121220 is an abundant number, since it is smaller than the sum of its proper divisors (226637855755988).

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

202212221121220 is a wasteful number, since it uses less digits than its factorization.

202212221121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100105060071 (or 100105060069 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 202212221121220 its reverse (22121122212202), we get a palindrome (224333343333422).

The spelling of 202212221121220 in words is "two hundred two trillion, two hundred twelve billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred twenty".