222022120020020 has 48 divisors (see below), whose sum is σ = 494274021142608. Its totient is φ = 83482989496320.

The previous prime is 222022120020017. The next prime is 222022120020091. The reversal of 222022120020020 is 20020021220222.

It can be written as a sum of positive squares in 8 ways, for example, as 34631318286244 + 187390801733776 = 5884838^2 + 13689076^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397410407 + ... + 397968686.

It is an arithmetic number, because the mean of its divisors is an integer number (10297375440471).

Almost surely, 2^{222022120020020} is an apocalyptic number.

222022120020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222022120020020 is an abundant number, since it is smaller than the sum of its proper divisors (272251901122588).

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

222022120020020 is a wasteful number, since it uses less digits than its factorization.

222022120020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795379940 (or 795379938 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 222022120020020 its reverse (20020021220222), we get a palindrome (242042141240242).

The spelling of 222022120020020 in words is "two hundred twenty-two trillion, twenty-two billion, one hundred twenty million, twenty thousand, twenty".