222222201100020 has 144 divisors (see below), whose sum is σ = 735358587687360. Its totient is φ = 53871673497600.

The previous prime is 222222201099989. The next prime is 222222201100063. The reversal of 222222201100020 is 20001102222222.

222222201100020 is a `hidden beast` number, since 222 + 222 + 201 + 1 + 0 + 0 + 0 + 20 = 666.

222222201100020 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 = 222222201099966 and 222222201100002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 374896036 + ... + 375488324.

It is an arithmetic number, because the mean of its divisors is an integer number (5106656858940).

Almost surely, 2^{222222201100020} is an apocalyptic number.

222222201100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222222201100020 is an abundant number, since it is smaller than the sum of its proper divisors (513136386587340).

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

222222201100020 is a wasteful number, since it uses less digits than its factorization.

222222201100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781806 (or 781801 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222222201100020 its reverse (20001102222222), we get a palindrome (242223303322242).

The spelling of 222222201100020 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, two hundred one million, one hundred thousand, twenty".