222112102021020 has 72 divisors (see below), whose sum is σ = 681857392756176. Its totient is φ = 58516280689152.

The previous prime is 222112102020989. The next prime is 222112102021097. The reversal of 222112102021020 is 20120201211222.

It is a happy number.

222112102021020 is a `hidden beast` number, since 2 + 221 + 1 + 210 + 2 + 0 + 210 + 20 = 666.

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 = 222112102020984 and 222112102021002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7433455677 + ... + 7433485556.

It is an arithmetic number, because the mean of its divisors is an integer number (9470241566058).

Almost surely, 2^{222112102021020} is an apocalyptic number.

222112102021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222112102021020 is an abundant number, since it is smaller than the sum of its proper divisors (459745290735156).

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

222112102021020 is a wasteful number, since it uses less digits than its factorization.

222112102021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14866941331 (or 14866941326 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222112102021020 its reverse (20120201211222), we get a palindrome (242232303232242).

It can be divided in two parts, 22211210202 and 1020, that added together give a palindrome (22211211222).

The spelling of 222112102021020 in words is "two hundred twenty-two trillion, one hundred twelve billion, one hundred two million, twenty-one thousand, twenty".