222201221210220 has 96 divisors (see below), whose sum is σ = 711343803050496. Its totient is φ = 50767429478400.

The previous prime is 222201221210197. The next prime is 222201221210323. The reversal of 222201221210220 is 22012122102222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110571141 + ... + 112562780.

It is an arithmetic number, because the mean of its divisors is an integer number (7409831281776).

Almost surely, 2^{222201221210220} is an apocalyptic number.

222201221210220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222201221210220 is an abundant number, since it is smaller than the sum of its proper divisors (489142581840276).

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

222201221210220 is a wasteful number, since it uses less digits than its factorization.

222201221210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223136311 (or 223136309 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 222201221210220 its reverse (22012122102222), we get a palindrome (244213343312442).

The spelling of 222201221210220 in words is "two hundred twenty-two trillion, two hundred one billion, two hundred twenty-one million, two hundred ten thousand, two hundred twenty".